I searched the forum, but did not find a similar Q&A.

I was a new user to Outlook 2007 and initially connected two internet gmail accounts with a POP connection. This did not work well. In 2010, I set up new connections using IMAP. Much nicer.

I was able to get rid of the previous POP email connections and 1 of the 2 .pst files. As the other is set as the default location I can not delete that one.

Under account settings I attempt so change the default default data file, but if I select either of the 2 newer files the set as default button is greyed out. As such I am stuck with a default file that I do not want.

Any advice?