My client received dtc approval for her disabled son. I was able to transfer the credit, and make other relevant claims, up to and including 2017, the year he turned 18. After that, although the T1ADJ form in profile shows amounts on certain lines (305/30400, 30425), I’m unable to populate those lines when I use “adjust my return” on the grounds that those lines are not valid in my case. My client is divorced, so can anyone explain why she might not be able to claim an amount on those lines? Thank you.