Yeah, so there is not some kind of external Windows-shell / OS-native copy involved when using CTRL-V in MC? It really looks like this is the case.
I am thinking that, because the Windows progress dialog comes up and because the "created" date stamp is reset to current date, just like Windows and Explorer do it all the time and also because the replace dialog of Windows can pop up. I can't say why MC is not doing the copy on its own and preserve the date stamps as I set in the preferences. Maybe there is some other related setting I overlooked? I checked again, "Keep date stamps" is checked, CTRL-V though, does not restore them.
I have to remember to NOT USE the clipboard CTRL-C+V it seems, kind of difficult! o)