History for superceded entity name

Recently (16th Feb) I found that a few integrations changed the naming of all their entities, so for example Comfoconnect.x became MVHR.x. I didn’t stop to wonder why & just changed everything to use the new names but I’ve just realised that I no longer have access to the history of these entities prior to that date. I would imagine they are still stored somewhere - is there any way to access the data?