I just tested this again in a more limited way than you: 20 folders, within another folder, each folder containing several files. It was fully successful. BTS 1.2.82 Win 7 current MS patches I added the folders to the main folder and after sync started, I put one machine to sleep. I began renaming folders. I renamed 4 sub folders and the top folder. I waited until BTS had lost the sleeping device in the Devices tab. I woke up the second computer. Files completed sync, folders were correctly renamed and nothing was in .syncarchive. (I have had problems with getting a successful sync on a much larger folder - 25 GB, 15K files. I eventually removed the sync, did chkdsk on both computers, recopied the files from one (known good) source to the second machine, made sure .syncignore was the same, reestablished sync and it has all been good. I had initially synced these with an earlier release of BTS, without a clean copy beforehand. I'm not sure what was not working but it has all settled down now - across 4 machines with various sleep and awake times.)