This discussion is a nice illustration about why an employer/administrator might prefer to keep its own records, independently from the recordkeepers’ and custodians’ records.
Don’t just leave those quarter-yearly transaction reports posted to the recordkeeper’s “sponsor service center” internet site. At least copy each digital file onto the plan administrator’s computer drives and further storage. And use considered file-naming and other methods so you can remember and retrieve what you’ve kept.
In the 1980s, it wasn’t easy. But now, we can help lead clients to relatively inexpensive protections.