Issue description:

one week ago, my server have started to not work well anymore, being stuck during the loading world step. no error log, just stuck after the preparing world at 100%.
After investigating a lot, i have found that removing the region folder, then start, then stop, the put again the old region folder works well....but not very good solution if i have to do that every day....
yesterday, one log attract my eyes : [Mekanism ChunkManager/]: Loading 398 chunks for dimension minecraft:overworld
.... why so many chunks ?! We are only 2 players on the server doing mekanism stuff
then I found this closed bug : #5978 ....
so I have removed the mekanism_force_chunks.dat file. and now all is really working well again. So maybe this is the same bug ? maybe when you move a digital miner with an anchor upgrade the old loaded chunks are not removed from the file ?

Version (make sure you are on the latest version before reporting):

**Forge: 31.2.9
**Mekanism: Mekanism-1.15.2-9.10.7.420.jar

Seems that this is the same thing as #6174 (comment) so closing this and going to continue to track it there.