Progress Billing Retention not showing on Page 1.

A customer going live using progress billings has just posted their historical billing.  When we looked at report #41 using the standard system report.form the retention isn't showing on page 1 where its supposed to be.  I've reviewed the release notes for 21.352 & 21.353 and don't see this issue listed. They are currently on 21.339

Anyone else seen this?  Do I just have to fix the form myself?