I earlier used the MartUpgrade utility to migrate my models, my users, and their profiles. Since that time, some models have changed in my r8 mart and I want to remigrate just those changed r8 models into my r9 mart. However, in the 'Data to Upgrade' link I deselect the Upgrade Users or Upgrade Profile check box but that also deselects the Upgrade Models check box. How can I remigrate just my models but not my user data?
Answer: there is a dependency between the models and the users and that would cause side effects if a user ran MartUpgrade for the first time but also did not upgrade their user information. To prevent that from becoming a problem, the MartUpgrade was designed so that when you deselect Users that also deselects all the other check boxes, including 'Upgrade Models'.
The solution is to remigrate both the model data and the users and their profiles again. The users and profiles that you migrated earlier will not be overwritten the next time you use MartUpgrade to upgrade your model data.