surrender license?

[scottgreiner]

I can kind of understand Avid's need to have us surrender previous licenses as a means of control, but this poses a problem...

I normally install new software upgrades on a separate bootable drive and run them through their paces before installing them on my computer full time. This way if there's any problem or bug, I can continue working with the current version (PT9) without interrupting my work until the bug is worked out.

So the question is, can I continue to safely run PT9 with only a PT10 license on my iLok (since I'm required to surrender my PT9 license)?