Thank you for the reply, /u/JagexHooli. To elaborate on my question, does the team have snapshot data of our accounts on March 4th to correlate with what we identify as missing after the Restoration phase?
Telemetry is a form of data that's about as up to date as you can get, so essentially yes. The challenge has been how we translate that properly to be usable as account data rather than just information.
The Beta will be a great way to verify the testing we've done at scale (this is why we've been so focused on doing one), and if anything isn't as it should be, support will be there to help further.