I am trying to do an upgrade from latest version of CMS Made Simple 1.x to 2.0.1.1
The CMS is updating [with some errors] but after update I've got multiple Designs and Templates. Multiple copies of the same content.
Here's the sample picture of it.

After the update the main pages are not linked to the css, but that's not major issue, it can be fixed manually in couple of minutes.
My question is, how I can prevent CMS Made Simple from making multiple 'Designs pages' and 'Templates pages' in Design Manager ?
I would like to have only that one from the old version.
Please note, that I've deleted non used content / pages / css / blocks / etc from old version of CMS made simple. Also I have a backups, so no worries.
The plugins are of course updated, tables optimized, and cache cleaned. Any ideas how to deal with that ?
Many Thanks in advance,
Best Regards