diff --git a/api/version.go b/api/version.go
index 9f4f7351361..cc0c7b270c1 100644
--- a/api/version.go
+++ b/api/version.go
@@ -57,8 +57,8 @@ var (
 	FullAPIVersion0 = newVer(1, 5, 0)
 	FullAPIVersion1 = newVer(2, 2, 0)
 
-	MinerAPIVersion0  = newVer(1, 4, 0)
-	WorkerAPIVersion0 = newVer(1, 5, 0)
+	MinerAPIVersion0  = newVer(1, 5, 0)
+	WorkerAPIVersion0 = newVer(1, 6, 0)
 )
 
 //nolint:varcheck,deadcode
diff --git a/extern/sector-storage/manager.go b/extern/sector-storage/manager.go
index 28e0715591c..595f6419ee7 100644
--- a/extern/sector-storage/manager.go
+++ b/extern/sector-storage/manager.go
@@ -12,6 +12,7 @@ import (
 	"github.com/ipfs/go-cid"
 	logging "github.com/ipfs/go-log/v2"
 	"github.com/mitchellh/go-homedir"
+	"go.uber.org/multierr"
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-state-types/abi"
@@ -589,7 +590,7 @@ func (m *Manager) FinalizeReplicaUpdate(ctx context.Context, sector storage.Sect
 		return xerrors.Errorf("acquiring sector lock: %w", err)
 	}
 
-	fts := storiface.FTUnsealed
+	moveUnsealed := storiface.FTUnsealed
 	{
 		unsealedStores, err := m.index.StorageFindSector(ctx, sector.ID, storiface.FTUnsealed, 0, false)
 		if err != nil {
@@ -597,7 +598,7 @@ func (m *Manager) FinalizeReplicaUpdate(ctx context.Context, sector storage.Sect
 		}
 
 		if len(unsealedStores) == 0 { // Is some edge-cases unsealed sector may not exist already, that's fine
-			fts = storiface.FTNone
+			moveUnsealed = storiface.FTNone
 		}
 	}
 
@@ -616,10 +617,10 @@ func (m *Manager) FinalizeReplicaUpdate(ctx context.Context, sector storage.Sect
 		}
 	}
 
-	selector := newExistingSelector(m.index, sector.ID, storiface.FTCache|storiface.FTSealed|storiface.FTUpdate|storiface.FTUpdateCache, false)
+	selector := newExistingSelector(m.index, sector.ID, storiface.FTCache|storiface.FTUpdateCache, false)
 
 	err := m.sched.Schedule(ctx, sector, sealtasks.TTFinalizeReplicaUpdate, selector,
-		m.schedFetch(sector, storiface.FTCache|storiface.FTSealed|storiface.FTUpdate|storiface.FTUpdateCache|fts, pathType, storiface.AcquireMove),
+		m.schedFetch(sector, storiface.FTCache|storiface.FTUpdateCache|moveUnsealed, pathType, storiface.AcquireMove),
 		func(ctx context.Context, w Worker) error {
 			_, err := m.waitSimpleCall(ctx)(w.FinalizeReplicaUpdate(ctx, sector, keepUnsealed))
 			return err
@@ -628,22 +629,30 @@ func (m *Manager) FinalizeReplicaUpdate(ctx context.Context, sector storage.Sect
 		return err
 	}
 
-	fetchSel := newAllocSelector(m.index, storiface.FTCache|storiface.FTSealed|storiface.FTUpdate|storiface.FTUpdateCache, storiface.PathStorage)
-	moveUnsealed := fts
-	{
-		if len(keepUnsealed) == 0 {
-			moveUnsealed = storiface.FTNone
+	move := func(types storiface.SectorFileType) error {
+		fetchSel := newAllocSelector(m.index, types, storiface.PathStorage)
+		{
+			if len(keepUnsealed) == 0 {
+				moveUnsealed = storiface.FTNone
+			}
+		}
+
+		err = m.sched.Schedule(ctx, sector, sealtasks.TTFetch, fetchSel,
+			m.schedFetch(sector, types, storiface.PathStorage, storiface.AcquireMove),
+			func(ctx context.Context, w Worker) error {
+				_, err := m.waitSimpleCall(ctx)(w.MoveStorage(ctx, sector, types))
+				return err
+			})
+		if err != nil {
+			return xerrors.Errorf("moving sector to storage: %w", err)
 		}
+		return nil
 	}
 
-	err = m.sched.Schedule(ctx, sector, sealtasks.TTFetch, fetchSel,
-		m.schedFetch(sector, storiface.FTCache|storiface.FTSealed|storiface.FTUpdate|storiface.FTUpdateCache|moveUnsealed, storiface.PathStorage, storiface.AcquireMove),
-		func(ctx context.Context, w Worker) error {
-			_, err := m.waitSimpleCall(ctx)(w.MoveStorage(ctx, sector, storiface.FTCache|storiface.FTSealed|storiface.FTUpdate|storiface.FTUpdateCache|moveUnsealed))
-			return err
-		})
-	if err != nil {
-		return xerrors.Errorf("moving sector to storage: %w", err)
+	err = multierr.Append(move(storiface.FTUpdate|storiface.FTUpdateCache), move(storiface.FTCache))
+	err = multierr.Append(err, move(storiface.FTSealed)) // Sealed separate from cache just in case ReleaseSectorKey was already called
+	if moveUnsealed != storiface.FTNone {
+		err = multierr.Append(err, move(moveUnsealed))
 	}
 
 	return nil
diff --git a/extern/sector-storage/stores/http_handler.go b/extern/sector-storage/stores/http_handler.go
index 80fa8740834..6b7d249040f 100644
--- a/extern/sector-storage/stores/http_handler.go
+++ b/extern/sector-storage/stores/http_handler.go
@@ -172,7 +172,7 @@ func (handler *FetchHandler) remoteDeleteSector(w http.ResponseWriter, r *http.R
 		return
 	}
 
-	if err := handler.Local.Remove(r.Context(), id, ft, false, []ID{ID(r.FormValue("keep"))}); err != nil {
+	if err := handler.Local.Remove(r.Context(), id, ft, false, ParseIDList(r.FormValue("keep"))); err != nil {
 		log.Errorf("%+v", err)
 		w.WriteHeader(500)
 		return
diff --git a/extern/sector-storage/stores/index.go b/extern/sector-storage/stores/index.go
index a90cdf0b969..35a1da693e9 100644
--- a/extern/sector-storage/stores/index.go
+++ b/extern/sector-storage/stores/index.go
@@ -7,6 +7,7 @@ import (
 	"net/url"
 	gopath "path"
 	"sort"
+	"strings"
 	"sync"
 	"time"
 
@@ -29,6 +30,27 @@ var SkippedHeartbeatThresh = HeartbeatInterval * 5
 //  filesystem, local or networked / shared by multiple machines
 type ID string
 
+const IDSep = "."
+
+type IDList []ID
+
+func (il IDList) String() string {
+	l := make([]string, len(il))
+	for i, id := range il {
+		l[i] = string(id)
+	}
+	return strings.Join(l, IDSep)
+}
+
+func ParseIDList(s string) IDList {
+	strs := strings.Split(s, IDSep)
+	out := make([]ID, len(strs))
+	for i, str := range strs {
+		out[i] = ID(str)
+	}
+	return out
+}
+
 type Group = string
 
 type StorageInfo struct {
diff --git a/extern/sector-storage/stores/remote.go b/extern/sector-storage/stores/remote.go
index bd6b34be334..42a41f78823 100644
--- a/extern/sector-storage/stores/remote.go
+++ b/extern/sector-storage/stores/remote.go
@@ -44,12 +44,36 @@ type Remote struct {
 	pfHandler PartialFileHandler
 }
 
-func (r *Remote) RemoveCopies(ctx context.Context, s abi.SectorID, types storiface.SectorFileType) error {
-	// TODO: do this on remotes too
-	//  (not that we really need to do that since it's always called by the
-	//   worker which pulled the copy)
+func (r *Remote) RemoveCopies(ctx context.Context, s abi.SectorID, typ storiface.SectorFileType) error {
+	if bits.OnesCount(uint(typ)) != 1 {
+		return xerrors.New("RemoveCopies expects one file type")
+	}
+
+	if err := r.local.RemoveCopies(ctx, s, typ); err != nil {
+		return xerrors.Errorf("removing local copies: %w", err)
+	}
+
+	si, err := r.index.StorageFindSector(ctx, s, typ, 0, false)
+	if err != nil {
+		return xerrors.Errorf("finding existing sector %d(t:%d) failed: %w", s, typ, err)
+	}
+
+	var hasPrimary bool
+	var keep []ID
+	for _, info := range si {
+		if info.Primary {
+			hasPrimary = true
+			keep = append(keep, info.ID)
+			break
+		}
+	}
+
+	if !hasPrimary {
+		log.Warnf("remote RemoveCopies: no primary copies of sector %v (%s), not removing anything", s, typ)
+		return nil
+	}
 
-	return r.local.RemoveCopies(ctx, s, types)
+	return r.Remove(ctx, s, typ, true, keep)
 }
 
 func NewRemote(local Store, index SectorIndex, auth http.Header, fetchLimit int, pfHandler PartialFileHandler) *Remote {
@@ -156,7 +180,7 @@ func (r *Remote) AcquireSector(ctx context.Context, s storage.SectorRef, existin
 
 		if op == storiface.AcquireMove {
 			id := ID(storageID)
-			if err := r.deleteFromRemote(ctx, url, &id); err != nil {
+			if err := r.deleteFromRemote(ctx, url, []ID{id}); err != nil {
 				log.Warnf("deleting sector %v from %s (delete %s): %+v", s, storageID, url, err)
 			}
 		}
@@ -355,7 +379,7 @@ storeLoop:
 			}
 		}
 		for _, url := range info.URLs {
-			if err := r.deleteFromRemote(ctx, url, nil); err != nil {
+			if err := r.deleteFromRemote(ctx, url, keepIn); err != nil {
 				log.Warnf("remove %s: %+v", url, err)
 				continue
 			}
@@ -366,9 +390,9 @@ storeLoop:
 	return nil
 }
 
-func (r *Remote) deleteFromRemote(ctx context.Context, url string, keepIn *ID) error {
+func (r *Remote) deleteFromRemote(ctx context.Context, url string, keepIn IDList) error {
 	if keepIn != nil {
-		url = url + "?keep=" + string(*keepIn)
+		url = url + "?keep=" + keepIn.String()
 	}
 
 	log.Infof("Delete %s", url)
diff --git a/extern/sector-storage/worker_local.go b/extern/sector-storage/worker_local.go
index 2ca86f5465a..4f7ae767dfe 100644
--- a/extern/sector-storage/worker_local.go
+++ b/extern/sector-storage/worker_local.go
@@ -516,7 +516,20 @@ func (l *LocalWorker) Remove(ctx context.Context, sector abi.SectorID) error {
 
 func (l *LocalWorker) MoveStorage(ctx context.Context, sector storage.SectorRef, types storiface.SectorFileType) (storiface.CallID, error) {
 	return l.asyncCall(ctx, sector, MoveStorage, func(ctx context.Context, ci storiface.CallID) (interface{}, error) {
-		return nil, l.storage.MoveStorage(ctx, sector, types)
+		if err := l.storage.MoveStorage(ctx, sector, types); err != nil {
+			return nil, xerrors.Errorf("move to storage: %w", err)
+		}
+
+		for _, fileType := range storiface.PathTypes {
+			if fileType&types == 0 {
+				continue
+			}
+
+			if err := l.storage.RemoveCopies(ctx, sector.ID, fileType); err != nil {
+				return nil, xerrors.Errorf("rm copies (t:%s, s:%v): %w", fileType, sector, err)
+			}
+		}
+		return nil, nil
 	})
 }