Hi @denise_childs - Needless to say, that should not be happening. I just tried doing an import on a sample class myself and did not replicate your issue. Are you doing an import using the "All Content" selection? That worked for me just now; I also did a "Partial Content" and purposely selected only Modules (not Assignments) and--as it should--Canvas dutifully imported the Modules and the assignments within them. (Placing them into an "Imported Assignments" group on the Assignments page, as it usually will for partial imports.)
If you have imported things more than once into this course site, be aware of this warning that is in the blue area at the top of this page:
Importing a course more than once may have unintended consequences. If you import content into a new course, edit the content in the new course, and later import the previous content again, the imported content will override the existing content.
I'm not sure if that applies to you in this case or not, but I figured I'd just mention it.
IF (and this is a big if) you do not mind wiping out everything--and I mean everything--in the current course site, you could go for the nuclear option of resetting course content and then trying to do another full import.
If the above does not help, it may be time to file a case with Canvas Support. (Help>>Report a Problem). As I said, I could not replicate your issue just now, though that's not to say there could be something else wrong somewhere.
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