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Which should I do first for my new Win 7 computer, migrate data from my old XP computer or install TB on the new one?

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TB ver 31.4.0 works well on my old Win XP machine which has only 6.48 GB of hard drive free space left. The local folder is on a POP mail account from Comcast. There is also imap account from a university. I am currently using Internet Explorer on the new machine but will eventually download Firefox. My concern is ending up with two profiles.

Thankk you for your help.

TB ver 31.4.0 works well on my old Win XP machine which has only 6.48 GB of hard drive free space left. The local folder is on a POP mail account from Comcast. There is also imap account from a university. I am currently using Internet Explorer on the new machine but will eventually download Firefox. My concern is ending up with two profiles. Thankk you for your help.

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Hi Poincare!

I've found this to be a handy article that may address some of your concerns. Check this out and if it doesn't answer your questions, let us know and we'll dig deeper into your issue : )

https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer