This means that the couple (old) posts that I just changed a couple labels, have now the wrong date!!!
These 'edited blog posts' also show at the top of this blog (i.e. on the blog home page) which is something that I don't want.
A key usability problem with this change, is that I will be more reluctant to change/fix old posts (for example adding a better label) since I will lose its post date (which for some posts is important)
Any idea on how to go back? I looked for a config option, but couldn't find one.