When I drag and drop FILES into a different folder, do older DESTINATION files get replaced or will they remain?If a same file exists a dialog box would pop up and give you 3 options. #1 - Replace this file at destination with file from source, or #2 keep both copies of same file NAME files to where it adds a (1) to the name, or #3 skip copying file(s) of same file name.extension. In which there is a check box in the lower left that allows you to select for the choice to apply to as many files that are same name.extension, so if your copying 102 files and of which 52 of them are same filenames.extension and you chose one of the 3 options and clicked on the checkbox to process all 52 with the selection of how to handle this, the 52 would be handled in the 1 of 3 ways that you were offered to handle it.

*Note: The biggest problem with like filename.extension files is that the dialog box will display a date/time stamp and if you are too quick to click for an overwrite of the destination with that of the source, you can potentially overwrite a newer file with an older file and lose work in say an excel spreadsheet ETC, so I generally do not USE the checkbox for replacing all 52 as in this example if there is the potential for older versions of a project to overwrite newer project files. However if you know that say the thumb drive that has files on it are the newest working copy and that of what is on the hard drive is older, you can click this check box and it will process the like files all the same vs having to agree 52 times to the dialog box.Thanks Dave, I appreciate your prompt response!
I started out on an Atari, too!