Bamboo importing/exporting failing with due to admin credentials and file doesn't exist

[Chris Miller]

We have Bamboo 6.7.2 currently running on a RHEL7 server.  We have setup Bamboo 7.2 on a RHEL 8 Server and we want to import from the older version of Bamboo/RHEL to the newer version of Bamboo/RHEL.  

Able to run the export from Bamboo 6.7.2 to an .zip file successfully.  

When trying to import that .zip file into Bamboo 7.2, get the following error message:  

You need an admin login in the import file to be able to make changes after import.  

File doesn't exist.  The import file could not be validated.  The error is:  Import file is corrupt.  Can't find any files to import.

Its my understanding, that we should be able to take this .zip file and as long as the Bamboo instance is not too dated, we should be able to import into a newer instance with no issues.  

thanks