Safari is limited to six Miraculous powers in her arrows at once, which doesn't make sense as Monarch is limited to five powers at once. Also, Monarch only transfers the power of the Goat Miraculous, so if he can replicate the abilities of other Miraculous he has no reason to transfer Miraculous powers to them.
There is no reason given why removing Miraculous should make Ladybug able to move again. In fact, in "Evolution" Bunnyx stays immobilized despite her Miraculous being removed.