I had Ankyo ready to upgrade to 5 stars, and am now back at needing 4,242 affection points.
I also had 3-4 others that I gave affection points to after Ankyo was ready to upgrade. They appear unaffected and I have been hurrying to pay for the upgrades for all of the ones I have remaining. Do points time out, or is there a limit to how many characters you can have ready to upgrade at one time? Is this unrelated to the patch?