@AlyceaUngaro
As far as I can reproduce, this is either a glitch, or maybe this might help:
Go to the blueprint course and hit the blue blueprint button in the top right corner of the course. Settings for the blueprint course slide out on the right side of your screen. The second item on that menu is 'Sync History'. If you have made changes to the blueprint course that are not synched yet, you can find them underneath item 3 "unsynched changes".
If above is the case, and you press the Sync button below 'unsyched changes", does that help?
If not, then I am afraid we have reached the end of my knowledge on this matter 🙂