Yay!!!!! It works.... so yahoo users can set the following filter: Filter name: DreamwidthReplies2Comments
If...
From contains "dw_null@dreamwidth.org" Subject contains "Reply to your comment." Body contains "replied to a comment you left in a Dreamwidth entry. The comment replied to was:"
no subject
Filter name: DreamwidthReplies2Comments
If...
From contains "dw_null@dreamwidth.org"
Subject contains "Reply to your comment."
Body contains "replied to a comment you left in a Dreamwidth entry. The comment replied to was:"
Then...
Move message to Inbox folder