I tried to use move-subpages to move a bunch of subpages. However, many of these had already been moved in a previous run. Those already-moved pages were counted towards $wgMaximumMovedPages, and thus no pages were actually moved on the second run. Obviously only pages that are actually moved in the current action should be counted towards this limit.
"Opening theory in chess" has been moved to "Chess Opening Theory"
A redirect has been created.
- The page Chess Opening Theory/1. Na3 already exists and cannot be automatically overwritten.
- The page Chess Opening Theory/1. e4/1...c5/2. Nf3/2...e6/3. d4/3...cxd4/4. Nxd4/4...Nf6/5. Nc3 already exists and cannot be automatically overwritten.
- The maximum of 500 pages has been moved and no more will be moved automatically.
So all of the pages that were counted towards the $wgMaximumMovedPages limit were actually not moved, which is wrong.