Move Hard Disk Image File from one drive to another in Hyper-V

Hi, I have a Hyper-V server with 3 virtual machines, and the disk image files are saved in My Documents. I am running low on disk space (20 MB left) and I cannot remote desktop into virtual machines, can I move one of them to a different drive where I have a lot of space, without losing anything? The average size of the Hard Disk Image File is 185 GB, and the OS is Microsoft Windows Server 2012.
Thanks.