Need to sync files based on filesize, not filedate

I use Dreamweaver a lot. I use it to manage a very large website, 50,000+ files. I also travel a lot. I'm constantly traveling across the country, and spend weeks or months away from home.

When using sync, DW checks the filedate on the server vs local, to compare. It ends up getting/putting thousands of files that have not changed. This is the result of my Windows OS adjusting to the new timezone that I'm in, each time I travel to a new location. Refraining from changing the timezone on my Windows OS is not an option. I spend weeks, months, away from home. I need to be able to see the correct time at the bottom-right of my Windows display.

I need the FTP sync to offer the option to compare files ONLY on filesize. This option should also be available when getting/putting individual files, instead of sync entire sites or folders. Every decent FTP software out there offers this. I don't understand why Adobe can't either.