Firstly, thank you so much for this wonderful editor. It has everything one can ask for and more.
I had a few issues, however. And since I am on a PS3, I'm not sure you can look into my save file but I'll upload it if you can help and if I can reproduce the issue (see point 2).
2) Did anyone have any trouble with the monsters and paradigms while only editing characters and inventory (NOT monsters) from the editor? I was having no troubles for a while when I was only adding new abilities, new accessories (with max of 2 extra passive abilities), and 9999 monster materials. I kept playing for a while and editing the save using the editor further and further. Eventually, however, I had an issue. Between the 2 saves where it worked and failed, I had changed Serah's and Noel's CP, max HP, made all components and items 99, and done nothing to the monsters! However, when in battle, this time, I had a certain Paradigm Pack. I retried the battle and, before it, changed my Pack. However, in the battle, my old monsters were present and I was suspicious. After ending the battle, I went to customize my Paradigms and the 6 paradigms were glitching. As I select one, it disappears, partially shows up, etc. I unfortunately immediately freaked out and deleted the save but I am not sure what caused it. So far, I tried editing their HP and CP individually and found no issues. Perhaps 99 of all components or 9999 of monster materials caused the trouble? Since the game's max IS technically 99, not 9999.