I recently had a requirement to make changes to the Navigation on our Account form (the entities that appear as Related based on relationships).
I made the changes in a solution in my development environment by updating the Navigation menu (see left of the image below). I saved and published this customisation and then exported the solution.
Next I imported the solution into my test environment. However, the changes to the Navigation had disappeared (see right of the image below) although a field I had added for a new attribute was there. It seems as though the customisations to the Navigation were not exported.
I tried re-publishing and exporting again but no luck.
Has anyone else experienced this issue?