Cache delete in GSAK DB does not work

When I try to delete a cache in a GSAK database (which was copied into the GCDroid database folder) the delete does not work.

Steps to reproduce:

- Copy GSAK DB to the GCDroid folder

- open the DB

- select 1 or more caches

- press delete

- confirm the deletion with YES

--> Nothing happen and the cache is not deleted

Same steps in a newly created DB with direct improted caches works perfectly