Hmmmm....
You know, I had a CTD after reloading a save after I had sunk a ship and I thought I might finally be the victim of a save game crash. I have always ignored the rules and have never had a problem until then.
I had to restart the career. The last time I played, I had just sunk a ship and was well away from the convoy and getting into position to pursue and reposition for a second attack when I had to call it quits and I saved.
I haven't loaded that save yet but now you really have my curiosity up on what might happen. I do have both those mods enabled and it is the first time I've played with them.
I will advise when I try it.