Lost message from XI 3.0 to ABAP proxy

Hi,

we are currently trying to send a message from SAP Rel. 4.5B by RFC to XI 3.0 and then posting it by ABAP proxy technology to an SAP System 4.7 based on WebAS 6.20

Everything seems to be fine while the message is marked "successfully processed" in the XI but we cannot find the message in the destination system. It seems that the message gets lost in the XI.

We've already checked our parameters and everything seems to be well maintained.

<b>Does anybody has had a similar problem? Could this be a communication problem between XI 3.0 and 2.0?</b>

Thanks for any comment.

Christina