I would TOTALLY agree with all who think it is best to "clean" the system as much as possible in regards to uninstalling older versions in order to install a newer version especially if this is what is recommended by the application designers but...
I still think that SB support should make it clear whether the hidden files should be left alone or deleted when upgrading versions as I posted:
It is clear that the application and any links to the application specifically that is being "upgraded" should be removed. But it is not so clear about the "hidden" backup files as to what should be done.In any case SB really needs to clarify whether these "hidden" backup files for older versions are compatible and/or used by upgraded versions. ---- By deleting the "hidden" backup files the user looses all history of changes made by SB.
Clearly by deleting these "hidden" files the user cannot then "undo" or "repair" changes made by the previous version with the upgraded version. However as far as that is concerned we really don't know whether upgraded versions access the same files that the older version used to do this anyway. I am unable to find any reference to these "hidden" backup files as far as whether it is recommended to delete or leave "available" for the new version for the purpose to "recover" from changes previously made.
And then as I suggested we have no idea whether SB support would conclude that leaving these "hidden" files would create problems for the upgraded version. If this were the case then this should be made clear by SB support and not just address the removal of the older SB application only via the "add/remove" windows application.