DB participant > 70.5 missed 7+ years of RMDs.
He separated from service 30+ years ago – wasn’t aware of the plan
The DB plan is now being terminated -that’s how the missed RMDs were detected – he is now being given the option to rollover to an IRA -wants to fix the missed RMDs first.

Question(s)
What’s the process to take missed RMDs from a DB plan? Do you follow the same process as a DC plan (i.e. 401(k))? take each years (missed) RMD and file form 5329?

Thank you