Looking at buying some used Arturia hardware and software.  Does anyone have any advice and feedback regarding the process to buy and transfer software licenses from Arturia?  Thanks!

Only know that it's easy peasy since they entered their new activation system last year. 

My experience with used hardware is fine (Sparkle f.i) .
 
Bought -> Mail to support
Prove of Purchase sent (f.i. photo of device showing SN)
-> Sparc 2 Software unlocked for me
 
Very easy & good support. With hardware at least, relating bundled software.
 
 

Thanks guys!  I bought a second hand Spark Creative (the first Spark).   Before the purchase, I made sure that Arturia was contacted by the owner and the device/software was unregistered. Communication and trust between the seller and I was good from the get-go, so no worries.  After receipt of the Spark, re-registration and authorization in my Arturia account was straightforward and worked well.