Stopping incremental crawl causes next crawl to be Full

Apparently, when you “Stop all crawls” in the Shared Services Administration: Default Web Site > Search Settings > Content Sources of SharePoint Central Administration, the next crawl will be a Full Crawl. The warning told me! Wait, I mean the warning that should have been there.

From TechNet:

  1. On the Manage Content Sources page, point to the content source you want to crawl, click the arrow that appears, and then click Stop Crawl on the menu that appears.


    A message appears warning you that stopping this crawl will result in the next crawl of this content source being a full crawl.

So that's why you see a full crawl when it should've been incremental. Or maybe I'm the only one who doesn't get this error?