diff --git a/src/dispatch/incident/flows.py b/src/dispatch/incident/flows.py
index a3de8af38ffa..307dde1cfc6b 100644
--- a/src/dispatch/incident/flows.py
+++ b/src/dispatch/incident/flows.py
@@ -1118,7 +1118,7 @@ def incident_update_flow(
     # add new folks to the incident if appropriate
     # we only have to do this for teams as new members will be added to tactical
     # groups on incident join
-    if incident.status != IncidentStatus.closed:
+    if incident.status == IncidentStatus.active:
         individual_participants, team_participants = get_incident_participants(incident, db_session)
 
         for individual, service_id in individual_participants:
diff --git a/src/dispatch/plugins/dispatch_jira/plugin.py b/src/dispatch/plugins/dispatch_jira/plugin.py
index 1161a9977508..29c9c9af588a 100644
--- a/src/dispatch/plugins/dispatch_jira/plugin.py
+++ b/src/dispatch/plugins/dispatch_jira/plugin.py
@@ -50,10 +50,12 @@ def get_email_username(email: str) -> str:
     return email
 
 
-def get_user_field(client: JIRA, user_email) -> dict:
+def get_user_field(client: JIRA, user_email: str, project_key: str) -> dict:
     """Returns correct Jira user field based on Jira hosting type."""
     if JIRA_HOSTING_TYPE == "Server":
-        user = client.search_users(user_email, maxResults=1)[0]
+        user = client.search_allowed_users_for_issue(
+            user_email, projectKey=project_key, maxResults=1
+        )[0]
         return {"name": user.name}
     if JIRA_HOSTING_TYPE == "Cloud":
         username = get_email_username(user_email)
@@ -173,13 +175,14 @@ def create(
         """Creates a Jira issue."""
         client = JIRA(str(JIRA_API_URL), basic_auth=(JIRA_USERNAME, str(JIRA_PASSWORD)))
 
-        assignee = get_user_field(client, commander_email)
-        reporter = get_user_field(client, reporter_email)
-
         project_id, issue_type_name = process_incident_type_plugin_metadata(
             incident_type_plugin_metadata
         )
 
+        project = client.project(project_id)
+        assignee = get_user_field(client, commander_email, project.key)
+        reporter = get_user_field(client, reporter_email, project.key)
+
         issue_fields = {
             "project": {"id": project_id},
             "issuetype": {"name": issue_type_name},
@@ -210,12 +213,13 @@ def update(
         """Updates Jira issue fields."""
         client = JIRA(str(JIRA_API_URL), basic_auth=(JIRA_USERNAME, str(JIRA_PASSWORD)))
 
-        assignee = get_user_field(client, commander_email)
-        reporter = get_user_field(client, reporter_email)
-
         commander_username = get_email_username(commander_email)
 
         issue = client.issue(ticket_id)
+
+        assignee = get_user_field(client, commander_email, project_key=issue.fields.project.key)
+        reporter = get_user_field(client, reporter_email, project_key=issue.fields.project.key)
+
         issue_fields = create_issue_fields(
             title=title,
             description=description,
diff --git a/src/dispatch/plugins/dispatch_slack/events.py b/src/dispatch/plugins/dispatch_slack/events.py
index f8070048411c..29caaeb6c6d0 100644
--- a/src/dispatch/plugins/dispatch_slack/events.py
+++ b/src/dispatch/plugins/dispatch_slack/events.py
@@ -309,6 +309,7 @@ def ban_threads_warning(
         # value, when they differ the latter is a reply to the former.
         message = "Please refrain from using threads in incident related channels. Threads make it harder for incident participants to maintain context."
         dispatch_slack_service.send_ephemeral_message(
+            slack_client,
             channel_id,
             user_id,
             message,