I actually question it in the opposite direction. It's natural the Bajorans would join Starfleet who helped them get back on their feet after what the Cardassians did to them....Except Bajorans enlisted in the forces of an enemy of the occupying force. In analogy, Cardassians should be enlisting in the Dominion military, rather than the UFP or KE or RSE ones.
That is an utterly absurd statement, but if you want to think of the UFP as an enemy force to the Bajorans, go right ahead... I shan't stop you.
The Dominion were responsible for what happened to Cardassia and were the occupying force, the Federation helped them to get back on their feet, and were the enemy of the occupying force. Now maybe the Romulan and Klingon prescence and aid could be akin to an Occupation, but, I certainly wouldn't expect the Federation Prescence to be seen in that light.
I think remnants of the now defunct military dictatorship that ran Cardassia for centuries would be resentful of the Federation's presence on Cardassia. It would be naive to assume that people like Gul Madred would do a 180 and would now support the Federation after the war. I could imagine a new version "The True Way" terrorist group, rising up to oppose the Federation's presence on Cardassia.
Look at it this way, most modern day Germans hate the Nazis, but still a small minority in Germany who support Nazi ideals. There will always people who embrace destructive ideologies.