Hello Mazi,
This should already be fixed in recent versions.
Can you please check if this issue still exists in the latest version of LimeSurvey and let us know?
Thank you!

@galads, this is still an issue at latest Version 3.28.6+220412. You just need to follow the 2 steps outlined above to find out.

PR: https://github.com/LimeSurvey/LimeSurvey/pull/2349

This is just a workaround.

We still need to review if the change below (making the groupid mandatory) is still necesarry, so we can review a more integral approach. e877a50#diff-8ba52d76c0ab5c25746214e40fd926cfdb0ae2024bd7bcdd90f1035014f5be12R141

If not necessary, the urls that point to the screen may need some reviewal in the order of the parameters and the ones being sent.

Inside version 3.27.34 also structure "add question > import" get broken after some click.

My procedure was:

1. open structure view
2. click on group #2
3. click new question
4. click import
5. import works correctly
6. question pops at the end of group
7. drag question at previous position
8. click group #2
9. click add question (again)
10. click import question - and then broke (status 400)

When you lose "/gid/319" query string value, if you force it by appending it in the url it's missing, when you land at the import controller, gid become groupid:
admin/questions/sa/importview/groupid/319/surveyid/151891

Maybe it's relevant

@tassoman Nice digging. Can I ask you to please open a new ticket?

filed in 18089

Fix committed to 3.x-LTS branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=33475

Fixed in Release 3.28.11+220517