i've just installed and tried it, it's not like I thought.
It seems rather that when you deselect a tank the mod only demount the equipment from the active slots, not both configuration
If i remember correctly how the mod worked in the past....
I think the problem may be in saving configurations. When you select enable auto return the 6 slots of the 2 configurations are stored on a file. however if an equipment is used on both it cannot be present in 2 slots at the same time unless you own 2 of them.
updated version 10 - UI show twice the battle results notification (in bottom right corner)
1st is the vanilla Wot notification and 2nd the extended notification with MoE wn8 and credits balance
not a big error but is annoying.