MicrosoftEd Hansberry, I guess that's due to algorithm of the conversion of old style expressions to new one. That's like ={1,2,3} in current Excel is converted to first element in background and returns 1. New Excel will return spill for the same formula. To return only first element we shall use =SINGLE({1,2,3}).
When we open in new Excel the file with such formula created in classic Excel it shows such conversion with SINGLE. In classic Excel "single" is somewhere in background and not visible.
Table[Column] is an array which is returned to the range. For one element only it could be converted into one cell range and we see something as above.
All above is only my guess, I didn't dig too deep with investigations and have no Microsoft knowledge of things.
