I just found this post:
Generation of TLE - Orekit development - Orekit
And it looks like the approach you are using used an Orbit object for the spacecraft states. The only difficulty is I don’t have an orbit as a spacecraft state, but rather an AbsolutePV coordinate. Is there a different approach that would be better to use, or is there some way to turn my PV coordinates into an orbit rather that I am just not seeing?