Dreamweaver 2021 no longer finds local files after ftp upload

I am a somewhat new user to Dreamweaver 2021 (iMac running Big Sur 11.7) and have encountered an odd issue after my first ftp "put" to my published website.  I have just a few html files (all in the same directory, let's call it the home directory) along with javascript files in their own folder (/java) and css files and image files also in their own folders (/css and /images).  When I use the onboard ftp to put all of my files onto the remote server, Dreamweaver will no longer look for any local files contained in subfolders, but instead lists the remote copies (which does not work when I'm working on editing as this results in none of the java or css or images files working in dreamweaver).  The only work around I have found so far is to completely delete the managed site, and set it up as a new site (which then has Dreamweaver once again pointing to the local files, thus allowing me to see the actual site as it should appear).  Am I doing something wrong in how I "put" my files up onto my web server?  It is extremely frustrating (especially after an hour long session with Adobe support who could not figure out why this is happening), and I am now looking to to you amazing smart folks!!  Thanks for any help!