HTML link won't "take"

For the past few days I have been fixing HTML files in a humongous (ca. 1.4GB in 7000 linked files) webpage that I'm trying to save into a format that will be self-contained on a DVD. Several times I have gotten to a stage where Abrowser freezes and I have had to reboot. That's not my problem ... yet.

Here's the real problem: After editing about a dozen HTML pages that each have several links to the same page at a non-local county library, I came to a page where I was able to fix the obsolete link at the top of the page, but when I fixed the very same link at the bottom of the same page (in a table, if that makes any difference) I could see that KompoZer had indeed changed the link to the correct code, but when I uploaded that file to my ISP and tried to browse it (with either ABrowser in Trisquel or Firefox in Win 7) the bottom link in the uploaded (and reloaded ...) page simply would not change from the old link to the new one, even though the link at the top of the very same page was OK. Even when I removed any trace of the link at the bottom of the page, the browser would not load that cleansed version and still showed the incorrect link. None of the hundreds of other links that I have "fixed" have exhibited this behavior. The "top" link always loads OK, but the "bottom" link remains the old one, even after several attempts to edit and upload that file. I have also rebooted Trisquel several times, even to the extent of using two different instances of the OS, one on the local hard drive and the other on a USB-connected hard drive.

Could it be that I have overloaded a cache or user limitation somewhere ?