I suggest checking the original view. Does it have user filters? Maybe the launching user hasn't configured the filter? Or does not have access to some element of the list in module?
Another potential problem is that the import mapping is not configured to match (check it):
Submit? Load >> Submit
Reject? Load >> Rejected?
Additionally, it is worth checking the DСA. If it is active, the user will not see any errors during import, but the data will not be loaded (in this case, the workspace administrator will be able to load them even through the DCA). Maybe your import chain includes DCA for target cells?
This is an import within the same module, and I'm simply loading the value from "Submit? Load" to "Submit?"... There is no list dimension, these are all line item bool. Also, the "Submit?" button is not locked, and even if it is, since I'm logged in as a WA, I should be able to update it via import.
Re: Importing Values to Booleans via Model to Model
I looked more closely. The @naveenmaurya is right, you have nothing in the columns in your view (judging by the screenshot). Therefore, it cannot import data. We'll have to add a technical element for the source.