From: David Alcala - Adobe on
The dwsync.xml files are only stored on the local machine and do not (should
not) get
uploaded to the remote machine. Note that if you disable "maintain
synchronization information",
DW also will *not* provide you with these types of warnings anymore when
uploading files:

"my_file.htm has changed on the remote server since your last get or put
operation. Putting it may overwrite changes to the file. Do you wish to put
the file anyway?"

How many DW site definitions do you have for this site? How have you filled
out the local, remote and testing server categories? Is the local folder
for your site def your workstation that has DW, or is it the testing server?

Do you have show hidden files turned on or off?: Expanded view of Files
panel > View > Show Hidden Files.

David Alcala
Adobe Product Support