yes, but
 

is there a known method to recicle partially saved files (like replacing a newly activated download of the same file with the older, more complete ones -- haven't yet come across those files, so hadn't the occasion to check out myself...)?

I've got (had) plenty of rather big, hard to dig out files downloaded up to 90% or so, and would be disappointed to just dump 'em...

TIA
daverie