There supposed to be 10k credits per research point after getting 25 points. However, this didn’t work for me in a recent playthrough. Here are my saves from Moebius Factor victory https://ufile.io/xcrdr5wm and consequently completed Utter Darkness victory https://ufile.io/brj19skf. Before Utter Darkness, I had all research maxed. I completed both objectives for 3 Zerg and 3 Protoss research, but was left with 45k credits as before. However, reloading victory saves gave me credits for this and previous missions’ extra research. My game version is 5.0.8.86383.