Modify time change to 01/01/1970 after move or copy

I use RaiDrive version 1.6.4.518 to mount google drive to my computer.
I found that after move/copy file in same drive, the modify time will change to 01/01/1970.
But it work correctly in 1.5.3.1.

I confirmed the situation you mentioned. The current patch has been prepared and is under testing.
I will try to distribute it as soon as possible.