Hello all, 

I have a question regarding scenario of "trimming" DNN tables, more precisely - those of DataSprings modules: Dynamic Forms & Dynamic Registration. 
In one of our applications we would like to decrease the database size to make backup process faster, and to reduce the time needed to perform db queries by moving outdated records to archive db or tables.
It looks like the most occupied area is Dynamic Forms and Dynamic Registation, so we would like to remove old entries from them. 
I'd like to ask You, dear readers, if anyone tried to perform similar task and maybe has some hints for Us. Most important in this case is data integrity to avoid fails after the operation, or abandoned data (records that don't have associated parent records - therefore they're useless). Also information on tables that we have to take care of while cleaning (ie. tables that have data related to Dynamic Forms/Registration) will be apreciated. 

Thanks a lot for Your help!