Wow... Now I finally get the Big Picture!
The cards are 9 pin not 15
Thought so. They are identical in size, I know.
Seriously, I don't see anything wrong with those converters, if they worked before, they should be working now.... Would be interesting to know the result of the swap, it might help us to find the problem. If - for example - transport of the D8B would not be working but timecode runs when you press play on the HDR, then one of the adapters should have a problem of some kind. If, however, nothing changes, then maybe one of the cards went belly up or the cable is intermittent /bad. Make sure you swap the converters only, not the cable ends!