I had some functions written in an XLA, and used in the spreadsheet.
Later I re-wrote them in an XLL, and gave them the same names as in
XLA.

When I uncheck the old XLA addin and load the new XLL, Excel is not
able to find
the UDF in new add-in, and shows a #NAME?

However, in any new workbook, the new function works ok. Only the old
workbook
somehow still expects to resolve these functions through XLA.

if anyone have any ideas, I'd greatly appreciate it.

thanks