ResearchPoint is backed up nightly and previous backups are saved in case the database must restored to an earlier date.  Backups are saved based on the following schedule:

Backup TypeRetention
NightlyOne Week
Weekly (Made on Sunday)4 Weeks
Monthly (Made on 1st of the month)6 Months

If you must restore to a backup of the database review How to restore to a backup of a ResearchPoint database (BB705938)