It is the second – italic – paragraph what I always forget. Thanks Mark Embling!
To move a file or set of files using tortoise, right-click-and-drag the target files to their destination and release the right mouse button. The popup menu will have a ‘SVN move versioned files here’ option.
Note that the destination folder must have already been added to the repository for the ‘SVN move versioned files here’ option to appear.
Yes, it is also in the TortoiseSVN documentation under Deleting, Moving and Renaming and Copying/Moving/Renaming Files and Folders. But those are lacking emphasis on the the italic stuff.
–jeroen
via svn – How do I move a file (or folder) from one folder to another in TortoiseSVN? – Stack Overflow.