Mail not using the correct account to reply to email
I use Gmail to fetch email from my other email accounts. Prior to Mountain Lion, whenever I replied to an email, Mail would use the correct email account to reply to. That is to say, Gmail was fetching email from abc@mail.com, for example. When I click reply, the default account would be mail.com. But since upgrading to Mountain Lion, the default account will be Gmail.com.
Has anyone experienced this? How were you able to solve this, if at all?
Thanks in advance for your responses.
MacBook, OS X Mountain Lion (10.8.2)