Problem with importing a temporary table/class/etc

I bumped into a strange problem. The admin refreshed my development environment from the TEST one; consequently, all my objects were deleted.

When I started re-importing them from an exported xpo-project, a temporary table always caused the following error:

A table, Extended Data Type, Base Enum or class called XXXXX already exists. Import of Table aborted.

The problem can be easily resolved by flushing the user cache:
Stop AX client and delete all  ax_*.auc files in "C:\Users\%USERNAME%\AppData\Local folder" 

Display methods and Caching on forms

Even though the form controls using display methods are deleted from the form, they are still executed if added in cache in Form datasource Init() method.