Retroarch .BSV replay files from netplay

I was wondering whether or not replays can be recorded from a game played through netplay. Running from command line, I have had no issues recording a .BSV replay offline with -R and playing it back with -P. However, when I try to play one back that I recorded from netplay, I just get a bunch of fast random button presses. I have tried this on both NES and PC Engine with the same results. Either something is wrong with my settings, or this just can’t be done for some reason.