This conversation has been merged. Please reference the main conversation: Lightroom: Chokes on large keyword lists (Windows only)
There is a problem moving keywords from one hierarchy level to another using the mouse (drag & drop).
Steps to reproduce (in my case):
- 2000 items in the root of the keyword list
- OK: Moving one item (e.g. number 385) under another item to generate a new hierarchy level.
- Not OK: Moving one item (e.g. number 1885) under another item to generate a new hierarchy level or just moving it to another level. LR works some time and then all items in the keyword list are marked up to the item number 1885.
This was tested on two different Windows 10 PCs, with a "work" catalog and with complete new catalog. On all test scenarios the tests were OK from item 1 to 1649. With number 1650 (exactly) and higher all tests went wrong.