Transferring software ownership to a new computer looking for advice

If you build a new computer and you don't own any software that requires a dongle, what steps have you taken to assure that everything you bought can be transferred with no problems?
 
This one is a bigger problem for me than assembling a new computer and it scares me the most. I'm even noticing myself procrastinating the inevitable. How do companies like NI and others handle transfers?...I'm taking a stab at it in thinking I should initially copy every single serial number down......I had major problems with my IK Multimedia stuff when I changed a hard drive. I cloned the drive and all of my IK software needed to be registered again...I still haven't done all of it, and this is only the tip of the iceberg compared to a totally new build.
 
If you can't tell me what to do maybe you can tell me what NOT to do :) Thanks!

I've never had any issues with transferring. I do know I'm at the end of my Best Service keys but you can simply email for more.

Wow thanks guys!...I was inder the impression it would be some kind of a nightmare. I was especially concerned with NI and Komplete. I might not even bother with some of the IK software since I'm hardly using it. If they make it a fairly painless process, then maybe I'll keep it around. I would hate to loose any of my Best Service software.