We checked into this a little further. A while back we developed a new paid feature, ‘Skip posts if their data in your file has not changed’. When we develop new features like this, we add them to the free version with the notice that you saw.
In this case, we accidentally had this feature enabled by default in the free version. This was obviously a mistake, which makes it look like ‘Update existing posts with changed data in your file’ is also a paid feature. This is not the case.
‘Update existing posts with changed data in your file’ and everything else works the same as it always has.
We’re going back in now to make sure ‘Skip posts if their data in your file has not changed’ is disabled by default which should clear up the confusion. Sorry about the confusion!
