multipacket reading

I need to read an incoming proprietary multipacket message (108 bytes) on an MD4-7.  When I look at a bus capture, I can see that the data bytes of interest are in the position I expect and I can 'decode' the values and see that they are also what I expect.  

When I create an incoming JFIN and designate it 'Multipacket: Yes' IQAN does not seem to see the whole message; bytes above 8 are marked 'error: out of range'.  Another thing I notice about the data in the bus capture is that the 108 data bytes are repeated while the value of the frame-count byte (byte 0) increases by counts of 16 - meaning it starts at 0-16, then jumps to 32-47 (data is repeated), then jumps to 64-79 (data is repeated) and so on up to 224-239.

Is this normal multipacket behavior?  How do I properly decode this message in IQAN?