Good mailmerge, well done mailmerge... Errr, not quite

I was amazed to find that the "save document" option at the end of
the mailmerge will save directly to a pdf file if I put that in as
the file extension.

Unfortunately, the first page is portrait when all the rest are
(correctly) landscape :frowning:

Has anyone else had this problem or have I done something wrong?

Regards
Mark Stanton
One small step for mankind...