Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
If you have your course completion card (not all instructors remember to issue them), I believe that one of your Unit Key 3 or Training Chair can add the course to your record in my.scouting using Add/Search in the Training Manager.
It was out of Council, and there was not a completion cert given. Contact with event staff yielded, “It would have been entered under your ID.” Sounds like it’s gone.
No big deal on the Cub Scout positions not visible in Scoutbook (noticing now that only positions with the current Troop are showing). Thought it might be related.
@j3r34d4m If you attend a training outside of your council, then that other council doesn’t have a way to enter your training. You would need to contact your current council and ask them to enter it for you.