I had to create a new Thunderbird email account after my company switched from an internal mail server to Gmail. My message filters were not transferred over into the new account. How do I transfer my message filters between accounts in the most recent version of Thunderbird? I'm assuming that this has to be an done via an import/export but I've not found any button or method on how to do this. I REALLY don't want to have to re-make every single filter I had in my previous account.