Hi Nasser, > I am sorry, but I was wrong. I only checked one external document. But when > I added a second one, I found it does not work. Links to the first one are > lost. > I cannot reproduce this problem. Multiple files work for me. Maybe look if you don't have some unnecessary .4ht files in the directory with your files. Updated TeX Live should work fine.
I've just fixed one minor issue. When I use Xr-hyper and the \hyperref command, LaTeX issues warning about missing \fi. I am not sure where it starts, but extra \fi in \XRrEfLiNK seems to remove this warning. Best regards, Michal
