Subject: Issue i005
Sorry about the delay. I took an action to put forward a new proposal for i005 and after reviewing the meeting minutes and the back and forth on the list, I think that Chris's proposal  (reprinted here for convenience) will be sufficient to close this issue.
An RMD MUST NOT issue a <SequenceAcknowledgement> containing a <Nack> for a message(s) that it has previously acknowledged within an <AcknowledgementRange>.
An RMS SHOULD ignore a <SequenceAcknowledgement> containing a <Nack> for a message(s) that has previously been acknowledged within an <AcknowledgementRange>.
During the discussion I also noted that their currently isn't any wording around what an RMS should do when it receives a NACK. While this is directly related to this issue at hand, it does not fall under this issue. I'll raise a separate issue with a proposal that will be based on the discussion we had for i005 so that we can keep the two issues separate and have a better chance of achieving consensus on both issues.