Hi Liz
Regarding Superclerk, the only possible conflict that I can think of between it and Adagio is that it writes to the older version of the Inventory History file. But I believe that Adagio Inventory will convert that older file version to the current version on the fly.
On a test set of data, you would want to process one transaction in Superclerk, run Dayend Processing, including printing and purging the dayend reports, and see if the transaction appears under the Transactions tab of Item Inquiry in Adagio Inventory 8.1A. If it does, then I feel confident in stating that you can upgrade Adagio without worrying about the impact on Superclerk.
Steve