nginx-full version numbering question

hey there - i had a question about an apparent version numbering issue 
with the nginx-full port:
https://www.freshports.org/www/nginx-full/

on April 10th the version number is:1.20.2_9,2
then on the next update (may 31) the version number seems to go 
backwards: 1.22.0_10,2

i was curious if that was intended?  this makes it a little awkward to 
upgrade a locally patched version of the port from before May 31, as 
i'll have to uninstall then install to pick up the latest upstream 
(which contains a fix i was patching out of tree).

thanks!
-pete

-- 
Pete Wright
pete@nomadlogic.org
@nomadlogicLA