diff --git a/webui/react/src/components/FilterForm/components/type.ts b/webui/react/src/components/FilterForm/components/type.ts
index 074523b5a73..f72690b49ec 100644
--- a/webui/react/src/components/FilterForm/components/type.ts
+++ b/webui/react/src/components/FilterForm/components/type.ts
@@ -25,9 +25,9 @@ export type FilterFormSet = {
   showArchived: boolean;
 };
 
-type FormFieldWithoutId = Omit<FormField, 'id'>;
+export type FormFieldWithoutId = Omit<FormField, 'id'>;
 
-type FormGroupWithoutId = {
+export type FormGroupWithoutId = {
   readonly kind: typeof FormKind.Group;
   conjunction: Conjunction;
   children: (FormGroupWithoutId | FormFieldWithoutId)[];
diff --git a/webui/react/src/components/RunFilterInterstitialModalComponent.test.tsx b/webui/react/src/components/RunFilterInterstitialModalComponent.test.tsx
index 3284273cdaf..7a05a4fdae1 100644
--- a/webui/react/src/components/RunFilterInterstitialModalComponent.test.tsx
+++ b/webui/react/src/components/RunFilterInterstitialModalComponent.test.tsx
@@ -109,14 +109,23 @@ describe('RunFilterInterstitialModalComponent', () => {
     expect(filterFormSetString).toBeDefined();
     const filterFormSet = JSON.parse(filterFormSetString || '');
 
-    // TODO: is there a better way to test this expectation?
+    // TODO: is there a better way to test these expectations?
     expect(filterFormSet.showArchived).toBeTruthy();
-    const [filterGroup, idFilterGroup] = filterFormSet.filterGroup.children?.[0].children || [];
-    expect(filterGroup).toEqual(expectedFilterGroup);
-
-    const idFilters = idFilterGroup.children;
-    expect(idFilters.every((f: FormField) => f.operator === '!=')).toBeTruthy();
-    expect(idFilters.map((f: FormField) => f.value)).toEqual(expectedExclusions);
+    const [, , idFilter] = filterFormSet.filterGroup.children;
+    for (const child of expectedFilterGroup.children) {
+      expect(filterFormSet.filterGroup.children).toContainEqual(child);
+    }
+
+    for (const exclusion of expectedExclusions) {
+      expect(idFilter?.children[0].children).toContainEqual({
+        columnName: 'id',
+        kind: 'field',
+        location: 'LOCATION_TYPE_RUN',
+        operator: '!=',
+        type: 'COLUMN_TYPE_NUMBER',
+        value: exclusion,
+      });
+    }
   });
 
   it('calls server with filter describing visual selection', () => {
@@ -139,7 +148,7 @@ describe('RunFilterInterstitialModalComponent', () => {
     const filterFormSet = JSON.parse(filterFormSetString || '');
 
     expect(filterFormSet.showArchived).toBe(false);
-    const idFilters = filterFormSet.filterGroup.children?.[0].children || [];
+    const idFilters = filterFormSet.filterGroup.children || [];
     expect(idFilters.every((f: FormField) => f.operator === '=')).toBe(true);
     expect(idFilters.map((f: FormField) => f.value)).toEqual(expectedSelection);
   });
diff --git a/webui/react/src/components/RunFilterInterstitialModalComponent.tsx b/webui/react/src/components/RunFilterInterstitialModalComponent.tsx
index 0a7b9f1a6ca..287b3f4a320 100644
--- a/webui/react/src/components/RunFilterInterstitialModalComponent.tsx
+++ b/webui/react/src/components/RunFilterInterstitialModalComponent.tsx
@@ -10,6 +10,7 @@ import { useAsync } from 'hooks/useAsync';
 import { searchRuns } from 'services/api';
 import { SelectionType } from 'types';
 import { DetError } from 'utils/error';
+import { combine } from 'utils/filterFormSet';
 import { getIdsFilter } from 'utils/flatRun';
 import mergeAbortControllers from 'utils/mergeAbortControllers';
 import { observable } from 'utils/observable';
@@ -77,7 +78,22 @@ export const RunFilterInterstitialModalComponent = forwardRef<ControlledModalRef
       async (canceler) => {
         if (!isOpen) return NotLoaded;
         const mergedCanceler = mergeAbortControllers(canceler, closeController.current);
-        const filter = getIdsFilter(filterFormSet, selection);
+        const filterWithSingleFilter = combine(filterFormSet.filterGroup, 'and', {
+          columnName: 'searcherType',
+          kind: 'field',
+          location: 'LOCATION_TYPE_RUN',
+          operator: '!=',
+          type: 'COLUMN_TYPE_TEXT',
+          value: 'single',
+        });
+        const filter: FilterFormSetWithoutId = getIdsFilter(
+          {
+            ...filterFormSet,
+            filterGroup: filterWithSingleFilter,
+          },
+          selection,
+        );
+
         try {
           const results = await searchRuns(
             {
diff --git a/webui/react/src/utils/filterFormSet.ts b/webui/react/src/utils/filterFormSet.ts
new file mode 100644
index 00000000000..74ad92ba07b
--- /dev/null
+++ b/webui/react/src/utils/filterFormSet.ts
@@ -0,0 +1,28 @@
+import {
+  Conjunction,
+  FormFieldWithoutId,
+  FormGroupWithoutId,
+} from 'components/FilterForm/components/type';
+
+/**
+ * build a new filter group given an existing one and a child. will add the child
+ * as a child of the current formGroup if the conjunction matches, otherwise
+ * will create a new wrapper group having both as children
+ */
+export const combine = (
+  filterGroup: FormGroupWithoutId,
+  conjunction: Conjunction,
+  child: FormGroupWithoutId | FormFieldWithoutId,
+): FormGroupWithoutId => {
+  if (filterGroup.conjunction === conjunction) {
+    return {
+      ...filterGroup,
+      children: [...filterGroup.children, child],
+    };
+  }
+  return {
+    children: [filterGroup, child],
+    conjunction,
+    kind: 'group',
+  };
+};
diff --git a/webui/react/src/utils/flatRun.ts b/webui/react/src/utils/flatRun.ts
index 5a7112893b6..d16feb8e1fc 100644
--- a/webui/react/src/utils/flatRun.ts
+++ b/webui/react/src/utils/flatRun.ts
@@ -8,6 +8,8 @@ import {
 import { PermissionsHook } from 'hooks/usePermissions';
 import { FlatRun, FlatRunAction, RunState, SelectionType } from 'types';
 
+import { combine } from './filterFormSet';
+
 type FlatRunChecker = (flatRun: Readonly<FlatRun>) => boolean;
 
 type FlatRunPermissionSet = Pick<
@@ -89,12 +91,11 @@ const idToFilter = (operator: Operator, id: number) =>
 export const getIdsFilter = (
   filterFormSet: FilterFormSetWithoutId,
   selection: SelectionType,
-): FilterFormSetWithoutId | undefined => {
+): FilterFormSetWithoutId => {
   const filterGroup: FilterFormSetWithoutId['filterGroup'] =
     selection.type === 'ALL_EXCEPT'
-      ? {
+      ? combine(filterFormSet.filterGroup, 'and', {
           children: [
-            filterFormSet.filterGroup,
             {
               children: selection.exclusions.map(idToFilter.bind(this, '!=')),
               conjunction: 'and',
@@ -103,30 +104,15 @@ export const getIdsFilter = (
           ],
           conjunction: 'and',
           kind: 'group',
-        }
+        })
       : {
           children: selection.selections.map(idToFilter.bind(this, '=')),
           conjunction: 'or',
           kind: 'group',
         };
 
-  const filter: FilterFormSetWithoutId = {
+  return {
     ...filterFormSet,
-    filterGroup: {
-      children: [
-        filterGroup,
-        {
-          columnName: 'searcherType',
-          kind: 'field',
-          location: 'LOCATION_TYPE_RUN',
-          operator: '!=',
-          type: 'COLUMN_TYPE_TEXT',
-          value: 'single',
-        } as const,
-      ],
-      conjunction: 'and',
-      kind: 'group',
-    },
+    filterGroup,
   };
-  return filter;
 };