Snapshot restore does not support entities (or biomes)

### WorldEdit Version

7.2.5

### Platform Version

This server is running CraftBukkit version 3078-Spigot-9fb885e-cc21bae (MC: 1.16.5) (Implementing API version 1.16.5-R0.1-SNAPSHOT)

### Bug Description

Restoring from backup: Item frames are not restored. Plain and simple.... not even empty ones

### Expected Behavior

When backup (sbackup) makes backupfiles of the worlds, then restoring parts of it with the help of Worldedit should restore everything in the backup. If this means 'Entities inclusive', then I wish it.

### Reproduction Steps

1. ...backup worlds
2. ... ..... days later......
3. ... woooh!, I think I need to restore this from backup....
4. ...SNAP! Itemframes and pictures are not there.... bummer....
5. I had in this Amigos world large walls full with item frames and they were filled up with maps of the area, now it is blank! ):
### Anything Else?

Add any additional context you can provide below.
I hope this catches your eyes and that it is not too difficult to solve....

Many many thanks for your efforts...