I have an Excel workbook with 4 sheets.  These sheets all contain names,
addresses and account numbers.  The data is roughly as follows:

Sheet 1:
Number  Name  Address
1             A         1a
2             B         2b
3             C         3c

Sheet 2:
Number  Name  Address
4             D         4a
5             E          5b
6             F          6c
7             G         7g
8             H         8h
9             I          9i

Sheet 3:
Number  Name  Address
4             D         4a
8             H         8h
9             I          9i

Sheet 4:
Code       Name  Address
90           Bank1  1
90           Bank2  2

I did a letter mail merge in Word using sheet 3 Excel file as the data source.
When I preview the results by pressing the button with <<abc>>, I get 40
results, which is the correct number, and the correct names are displayed as
I scroll through.  But when I merge (to printer or file), I get the following
results:

4             D         4a
1             A         1a
2             B         2b
3             C         3c
8             H         8h
1             A         1a
2             B         2b
3             C         3c
9             I          9i
1             A         1a
2             B         2b
3             C         3c

In other words, all of Sheet 1 is merged in between every single row.

Does anyone know what is happening here and if there is anything I can do
about it?

Thanks,
Tara