The Disgaea 3 trophy patch goes live on July 16th, adding in the ability for players to earn coveted trophy points for achieving various goals. Unfortunately, most players will have to achieve those goals all over again, as the patch will render all of their Disgaea 3 save files useless. The official press release for the announcement contains the following warning in bright red type: CAUTION: Trophy Patch Update will make old save data unusable.
Disgaea 3 is the sort of game that one can play for 100's of hours, so news of a patch that renders such progress null and void might as well have been titled "Don't Download This Patch" as far as most fans are concerned. The only alternative I can see is to back up your save files, just in case, start a new game to unlock trophies, and then uninstall the patch when you are done in order to access your previous saves.
That's an awful lot of hoops to jump through, but if you really want those trophies, then there you go. Me? I think I'll pass.