Copy deletes target data

Why does copy delete the target managed data?

If the target data for a copy operation is managed, VersIC does the following:

1. Deletes and commits the target data.
2. Copies the source to the target:
   1. If the source data is managed and Copy History is enabled, this is a DM copy
   2. If the source data is unmanaged, unix cp is used. Add the copied data if 'Add to VersIC' is enabled.
3. Commit the changes.

The reasons for deleting managed target data rather than just checking it out and overwriting:

1. If both the source and target are managed, a DM copy will not work.
2. The list of files in the source and target may differ, so checkout + copy may result in inconsistent contents (e.g. if the thumbnail file exists only in the target data, the thumbnail will be incorrect) 
3. So that the DM history shows a discontinuity for a copy operation.

We recognize that this is not the preferred behavior in some use cases.

Workaround for cellview copy

If your intent is simply to replace the contents of a checked-out cellview, you can use 'Save As' from the source cellview to overwrite the target cellview.