Why I can't copy snapshots to a different drive

[Sandman192]

• I have read the README.md document <-- Don't know where to find that
• [ x] I am using the latest version of Warehouse
• I am using the Flatpak package of Warehouse <-- (Does not say)
• [ x] I have not found any other opened issues on the same topic

Why I can't copy snapshots to a different drive.
While trying to do a snapshot restore test I can't find a way to do that.
Can't trash the snapshot that is already taken.
Will not snapshot Alien Arena.

I want to do a clean install of Bazzite and use the Snapshot on a different drive to re-download all the apps I had before.

If applicable, provide steps to reproduce the issue

flatpak run io.github.flattool.Warehouse

(process:2): Gtk-WARNING **: 17:30:59.558: Unknown key gtk-modules in /home/bazzite/.var/app/io.github.flattool.Warehouse/config/gtk-4.0/settings.ini

[RasheedAZ]

This is possible by simply copying the Snapshots folder to another drive or location:

1. Copy and save the IDs of the flatpaks you want to reinstall.
2. On the Snapshots page in Warehouse, click the folder icon to open the Snapshots folder.
3. Navigate one level up in your file manager.
4. Copy the Snapshots folder to another drive or location.
5. Install Warehouse and the other flatpaks on your new OS.
6. Copy the Snapshots folder from your external drive to ~/.var/app/io.github.flattool.Warehouse/data/
7. Open Warehouse and restore the snapshots.

I've backed up and restored successfully this way at least twice, once on my PC and once on my Librem 5 Linux phone.