Interaction of DTPO and Mailtags-tags (problems)

Hail knowledgeable Ones!

While working on a project I imported some emailmessages into the relevant project folder in DTPO (via plugin Mail: „add to DTPO“). I’d added some tags via MailTags.

Problem 1) seems not including replies I’ve sent, so is not – as I set it up in preferences – „including whole conversations“ and „grouping conversations“ (see screenshot):
Bildschirmfoto 2013-04-24 um 10.54.37.png

Problem 2) tags in DTPO look – well – funny

see screenshot:

in Mail looks like this:

Bildschirmfoto 2013-04-24 um 10.51.42.png

I am on 10.6.x, DTPO 2.5.2, Mail 4.6, MailTags 2.6.2b1290

Any ideas? For conversion of these tags too?

Thanks a lot

Rolf