Will converting to IMAP from POP remove Local Folders?

[PatD]

My wife has been getting "The POP3 mail server (pop.mail.yahoo.com) does not support UIDL or XTND XLST, which are required to implement the ``Leave on Server'', ``Maximum Message Size'' or ``Fetch Headers Only'' options. To download your mail, turn off these options in the Server Settings for your mail server in the Account Settings window." message for over a week.

I think the message is to abandon POP. and switch to IMAP.

I moved the historic folders we imported from Windows Live Mail to the folder labelled "Local Folders". Will these folders still be there after I convert her from POP to IMAP? When I tested the conversion on my yahoo account - going from POP to iMAP, Thunderbird downloaded all my mail (headers) again.

[DanRaisch]

Thunderbird's Local Folders is not impacted by adding or removing email accounts. See this article on how to "convert" from POP to IMAP -- https://support.mozilla.org/en-US/kb/sw ... ap-account