I’d like to recommend to everyone in this chat that they raise the concern over the replacement for a production endpoint being a /beta endpoint with their Customer Success Manger or equivalent SailPoint representative if they haven’t already done so.
We’ve been able to see while testing the behaviour of the replacement endpoint that there has been a change (likely related to troubleshooting and fixing a bug/permission issue) between last week and this week without any notification about it. Have a look at The documented scope for /beta/sources/:id/load-accounts doesn't work - #4 by RRLatFlinders for the details.