If this is true, wow we sure need a NOTAM section when any feature in FSA gets get changed. A "locked" (no-comments allowed) NOTAM thread where updates and changes are all posted for easy reference. And mybe even a hot link in the crew center, "NOTAMS". They don't have to be wordy, just a quick synopsis of any feature change and a link to the proper forum thread that discusses said change in detail.
This is the package pay/fee data I have that I "assume" is current:


I also believe that once you move a package from it's departure location and then release it, you are billed the full amount regardless of time.