Actually this doesn't look like an helpful answer to me. If I understand Management Modules and their installation correctly then only the scripts that are packed into that installer are executed during the installations and not any other script from another (older) Management Module.
It doesn't seem right to me, that all scripts from previous MMs are executed during the installation of a new MM. This would be a pretty chaos.
So the statement of no official way isn't really related to the question and therefor not really helpful.
Maybe it's better to check if there is a bug in the MM installer or if wrong scripts are mistakenly linked in the .i file.