Well, we also did an update just recently, so I'm tempted to think the crack wizardry at QB / Intuit added at least one or two "undocumented features" into the update. I'm seeing these new columns showing up in a few reports, and they seem to have replaced a column for "Amount" that now is no longer appearing. I have also noticed that this Act. Cost column is showing up in both standard (provided) reports AND in memorized reports, so it appears that these crack wizards have developed near super-powers in wreaking havoc in report-land.

I believe it was user Fishing For Answers who told me that I could delete these unwanted columns by clicking on the three dots at the top-right of the unwanted column and while holding down the click while dragging the dots past the left side of that column you are telling the system to not display the column. That may help clean the report of the junk the wizards have given you, but you will have to re-add the data column you do want to show up there. 

It would have been just peachy if the wizards had tested things before they sent it out to the world ... and I'm sure they would say "we did test it", to which my response would be "If you had experience out in the real world to know how actual real-world users actually use the system, your testing would be immensely better because you obviously don't know what to look for in your testing!"