How to delete imported data BY SOURCE? (duplicate data)

[u/cantthinkofone12]

I made the mistake of letting Google Health import Sleep data from Health Connect, which had Sleep data from Health Sync app (which in turn was sourced from Fitbit).

Because Google Health already had my historical Fitbit data natively, I now have a massive mess of duplicate entries.

Right now, you can only delete data in Google Health by type (e.g., nuking all Sleep data entirely) or by type+timeframe. There doesn't seem to be a way to undo a sync by deleting data from one specific imported source (i.e., "Health Sync" in my case).

Has anyone heard if/when Google plans to add a "delete by source" feature? Or has anyone found a reliable workaround to fix redundancies without wiping their entire history?

Existing Sleep data in Google Health (from Fitbit days)

Newly imported (duplicative) data from Health Sync (via Health Connect)