Copying values of merged cells

I have a pair of workbooks in which one calculates a number of values and I want to store the values only in the other.

I would expect to be able to highlight the range of the calculated cells in the source workbook, Copy and then Paste Special | Values in the other.

Both the source and the target contain some merged cells. When I try to do the paste, it complains that "this operation requires the merged cells to be identically sized".

They are identically sized.

I have even done Paste Special | Column Widths to guarantee they are identically sized. It doesn't complain about the merged cells then; in fact, it doesn't complain about the merged cells with any of the other paste operations, only with Values.

I have been able to repeat the behaviour with a very simple example. See the two attached sheets. Try pasting Values only of the range $B$2:$D$4 from either one to the other.

When I first created the samples they worked. What seemed to triggered it is I changed one of the merged column widths by one pixel, tried expecting it to fail (and it did), changed that column width back again and it hasn't worked since. As I said, I even tried pasting the Column Width to the target, which it appeared to do successfully, but it hasn't helped.

Now, the attached examples are only to show the principle of the problem. They are very simple and there would be a myriad alternative work-arounds for them. In my original case though there are many formulae over a much larger range and I want other people to be able to paste values without having to follow complicated instructions, so I am not looking for work-arounds unless someone has a mind-numbingly simple one that my numb mind has overlooked.

The only other way of solving the problem that I can think of would be to write a macro that copies cell values individually, but I'd rather not do that because I know these people: they will get narky about having to enable macros. It will be "against organisation policy" or something.

Is there any way of resetting the target workbook so that it will receive the values from the source?