modded weapon question

[MagellanDiMarco]

43

Ok, so I used FO4Edit to 'port' over a rifle I had made way back in FO3 and used in FONV also, BUT it never carries over from one FO4 savegame to another. Basically, I have it, I save, I quit, I continue from said save, and the rifle is gone. Even if I put it in a container, it's still awol. When I console it back into my inventory, it has some of the same stats, but always has random mods (which I have to ramp up using the weapon bench). It's a minor annoyance, but still...any instruction for me? Am I missing a step somewhere? Thanks in advance.