The empty clones cannot be used to uninstall the mods and need to be replaced again with the original files to uninstall their contents from the Data folder. Note: This is best done to large mods you've already installed, or ones you don't plan to install straight away. The reason for this is that it normally goes though a process of loading archive files into temporary memory (I'm not of sure the correct, technical, explanation) based on the sum of their size on disk, for example I've had over 10GB in archives and it's taken up to 2 minutes to start considering NMM is also a download manager, it can take however long before the downloading of mods can begin-this can be pretty frustrating. So, on startup, it sees the clone and assumes that's the original. You can replace the larger archives with empty clones. If it's taking the program more than 10 or 20 seconds to load, the cause is likely that you have a lot of large mods in the NMM archive folder. How to Speed up the launch time of NMM if it's behaving laggy (I don't think this is translatable to OBMM, FOMM or WryeBash:
