[user02934123123]

I'm not quite certain I understand what you're asking, Ziki. If your paid subscriptions are set up to add a secondary usergroup, going into the user manager and de-selecting that secondary group shouldn't effect their subscription status in terms of active / completion - you should then be able to add it as a secondary group again if you wish.

But this depends on how you have things set up. Since there are a number of things that could factor into how it works, the best bet is to test it out yourself: create a paid sub for yourself, and see if manipulating the usergroups causes any problems to your subscription status.