Hi
First to verify, did you remember to Publish All Customizations from the Solutions Screen (top), after the import? If not please do that and see if its resolved.
Try again, if you have and it is still the same, then there is an issue between the version you have in dev, and how its linked to the Table and what its like in Test
Also, I never ever recommend putting something in Prod until you actually verify and test it in Test, it can cause all sorts of mayhem.
Go to the Solutions screen and publish all from the menu at the top, not from the solution and not from the Export.
Then try again and see if it fixes it.
If not, delete the managed in test, or try and see if you get any dependency errors would could explain the issue.
If not, export and install again.