IDOC_2_SOAP where receiver can only process one Idoc per call

Guys,

I've got a bit of a conundrum here which I hope the community can help with.

So the scenario is IDOC -> PI -> SOAP Webservice (Async)

I have an existing IDOC AAE Sender that is Collecting IDOCs so, SAP sends N IDocs and these are all collected into one message (containing N IDocs) which are passed to the receivers.

So I have 2 different types of receivers:

1. SOAP Webservice that can process all N IDocs in one webservice call
2. SOAP Webservice that can process only process ONE IDoc per webservice call

Receiver type 1's are catered for fine.

But my issue is how to cater for second type, where the webservice can only take one IDoc's data at a time.

PI7.4 and BPM isn't an option...

I know it would be fine if we had the IDOC sender not collecting but changing that would break the interfaces that rely on that.

Thanks in advance.

Peter