It is very difficult to identify the unwanted information, hence the macro
The macro deletes the unused part of the worksheet. Try it on a copy of the worksheet.

If you are using a worksheet as a data source that has other random information divorced from the data part of table, then that other information is going to impinge on the merge process, which will see it as part of the data.

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Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com