OK, tell us whether any of those before and after values are significantly different. Especially for Fs, Vas, and Qts, would they make for a significantly different cabinet?
And while I'm being a such a pest
, you can't really conclude that the T/S parameters change after 30 minutes of "warm up" unless you show that such variations in measurements are within the precision limits of Woofer Tester II. If you made 10 measurements under the same conditions, how much would they vary? And is that comparable to what you found above? And finally, would the measurements vary like that if you made several measurements without any warm up? Is 30 minutes enough warm up? Would the measurements continue to change with more warm up? What are the temperatures of the voice coil, and have they reached a steady-state?