"I've checked in with our engineering teams, and we unfortunately don't yet have a fix or timeline to share here, though we have made additional progress on scoping a path forward. It's extremely complex on our end, as existing data models don't have the required information in place to make the change here, and we'd need to scope how to add that and backfill data (which we're approaching, but again, no timeline to share as of now)."

Obviously I don't know anything about them internally, but if I can export the data as a CSV-file, and then calculate the MRR myself in GSheets, then what data needs to be backfilled? The data is already available to properly calculate it.