Whenever I attempt to upload a saved realm from a newer version of Java to a Java Realms, I get an Upload Failed! (-1). I've tried a number of saves (1.19.4 and 1.20.1). Same results. Older saves upload without issue (1.19.3 and earlier are all fine). Local and LAN versions of the save that fails to upload to realms work just fine.
I've searched the forums and couldn't find anyone else reporting the same issue as me. Maybe I just wasn't wording it right.
Related issues
Attachments
Comments

Thank you for your report!
We're tracking this issue in REALMS-364, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki – 📖 FAQs