diff --git a/skill-evals/cases/copy-still-running.yml b/skill-evals/cases/copy-still-running.yml
new file mode 100644
index 000000000..4f1903d89
--- /dev/null
+++ b/skill-evals/cases/copy-still-running.yml
@@ -0,0 +1,10 @@
+task: Earlier I asked you to copy to-do 4567 to the Marketing project, and it said filing 735 was still running. Did the copy finish?
+tags: [domain, copy]
+mocks:
+  - match: 'filings show[ =]735(?!.*--help)'
+    output: '{"ok":true,"data":{"id":735,"status":"completed","type":"Copy","source_recording_id":4567,"destination_recording":{"id":9001,"type":"Todo"}},"summary":"Copied #4567 as Todo #9001"}'
+expect_sequence:
+  - match: 'filings show[ =]735(?!.*--help)'
+reject:
+  - '\btodos copy\b'
+max_commands: 3
diff --git a/skills/basecamp/SKILL.md b/skills/basecamp/SKILL.md
index b5503556a..9c36b4683 100644
--- a/skills/basecamp/SKILL.md
+++ b/skills/basecamp/SKILL.md
@@ -44,6 +44,10 @@ triggers:
   - mark done
   - create todo
   - move card
+  - move to another project
+  - copy to another project
+  - copy todo
+  - copy card
   - download file
   - search basecamp
   - find in basecamp
@@ -136,6 +140,12 @@ apply where supported.
   block execution.
 - When a result reports content or description attachments, download and inspect
   them. Images often contain the essential task context.
+- A move into another container prints the item's new ID; use it afterwards,
+  since the old ID stops taking writes. A copy prints the copy's ID and leaves
+  the original as it was. Never repeat a copy: Basecamp files it in the
+  background, so a copy that is still running or lost its answer may already
+  exist. Check it with the `basecamp filings show <id>` command or the hint it
+  printed, never by copying again.
 - Follow the installed command's help over examples remembered from earlier CLI
   versions.