Microsoft 'From SA' sku and your perpetual rights
I have a question regarding when a company transitions from on-premise licenses (Office Pro Plus) and moves to say O365 E3. One way I have read is by using the 'From SA' sku which provides a discount compared to a Full USL.
The question becomes do you lose your perpetual rights if you purchase the 'From SA' sku. I have read in different places you keep the perpetual rights of when you transition and others saying you can only gain the rights back if you transition back to an on-premise solution.
Thank you for your help in advance.