Thanks for your response Jonas.
For some reason I wasn't getting Microsoft notifications for this, so apologies fo the delay in reply.
I've still had issues with this, created different versions of workspaces/personalisations with various standard screens, work details, exported/imported as a mix of roles, Warehouse worker, Warehouse manager, etc, exported/imported as System administrator, and looked at your privilege suggestion below.
The Import & Export seems to always be visible.
Its still very restricted as to whether it will work or not.
I was able to export a work details page, in a test workspace as System administrator, then import as a Warehouse worker which succeeded. So I think as long as a user has the correct roles to view the workspace then it seems that will work.
In the past though when this scenario occurred, the workspace would just omit the page from the workspace, giving a notification in the Action centre.
Looks like we'll just have to continue to run any export/imports by granting temporary System Administator privileges, then removing again once done.
Thanks for your help with this.
Rgds.