Sadly, the saga isn't over. ☹️
The work around of applying a blank default grade is preventing Canvas from marking items as missing when the due date/time passes. If I manually mark things as late, then when they do complete the assignment, the missing label is still applied until I manually remove it. 😔
A colleague with more user rights was able to go into my old Canvas courses and remove the missing policy, since everyone seemed to think that was causing the issue. Once removed, I attempted to important 1 assignment. The same "0" issue occurred. I then deleted that assignment all together and imported it again, thinking that it might be an issue with overwriting the existing one. Same issue. 😔
I am also getting an error whenever I try to change the missing assignment settings, so I wonder if that is also part of a larger problem.
I'll be reaching out to Canvas Support again later today during my lunch and "lay it all out" for them and see if they can escalate this and find out what is happening, since it is happening in two courses that were imported from the previous year. Other teachers also have the "0" when importing, but they say that they don't have an issue with the missing label being automatically applied when the due date/time passes.
I'll keep everyone updated as I go through this. 😊