It's only event types Toolkit_folders_create and toolkit_folders_delete and only for 'new' events and for the current project. note that each *batch* of folders being created are represented by a single entry here, so even if there are 7000 folders created in a single folder creation request, only one event log record is written. I was hoping that the worst case number would be a lot less than 100k - what do you think? Also, the system relatively easily falls back on a full sync, which uses a different scheme..