numbers version 13.0 update erased 30 days of data

I've got a shared numbers document that started giving me some kind of "warning, update to the new version so you sync your shared data" about 45 days ago. A few days ago I finally had time to do it, so I made sure the document was saved, then updated numbers. Now, my document is only showing April 10th as the newest version. If I try and restore an older version, it only goes in the past, and nothing from the last 40 days is available. I don't have time machine backup on this computer. Is there any way to get back my data?