If you wanted to play GMS just to see some new things, well here's a guide on how if you don't know how to do so already.
Firstly, if you want to move the v55 folder do so, but it's simpler to just rename it to something like "PrivateMS".
Then you just install GMS and you just play on how you did before, hoped this helped for people who didn't know how to do this.
~Dice