How long will my Stock Transfers and Inventory Tracking plugin data be kept after deactivation?

How long will my Stock Transfers and Inventory Tracking plugin data be kept after deactivation?

As long as the date on which you clicked the ‘deactivate’ button is BEFORE the current subscription renewal date, the data pertaining to the Stock Transfers and Inventory Tracking plugin will be retained. After that the data pertaining to the Stock Transfers and Inventory Tracking plugin is deleted, from the application. 
Plugins in Tagrain are either Subscription Based or License Based. So the price that you pay for your plugins is based on the number of POS terminals that you have in your setup and the number of licences that you have acquired.
There will be no change in your subscription amount in the current billing cycle if you are only deactivating the Stock Transfers and Inventory Tracking plugin AND not updating your Store / POS count.