I am using WinHTTrack Website Copier 3.23 (+swf).

With "Limits > Maximum mirroring depth" and "Limits > 
Maximum external depth" set to their default values, which 
should have been infinite and zero respectively, I am 
preplexed as to why WinHTTrack treated "Limits > Maximum 
external depth" as infinite in one update I performed.  (I 
don't use other filters.)  Long after the update was in 
progress and seeing the aberrant behavior, I reset the 
limits on the fly to 3 and 1 respectively.

The result is that I now have at least one new site 
partially captured.  I would like to create a new project 
to selectively capture the rest of it (I'll provide the 
relevant URLs) while not causing HTTrack to download again 
what already has been captured.

How do I do that?