Hi Rene,
thanks for the response, although that was not the answer I was looking for. I think I did not ask precisely enough – i.e. what happens behind the scenes.
In the meantime I took a look at the code, and found that you flip an option for this. So, the answer to my question is basically: set ‘wpstg_is_staging_site’ in wp_options table to ‘false’ to disable the admin check after reimporting.
Again thanks for the plugin, it helps me currently a lot.