Dear KLIK_Photograph,
We do have eVar for this purpose only. Just capture the Front Journeys (Different Journeys) in an eVar. So, if the customers move to the Order Journey, we can understand the last touch using Attribution IQ. Make sure you set an event during the start of Order Journey so that you can play around with the attributions.
However if the visitor started the Order Journey twice, the events captured would be two and thus there are two last touch Front Journeys. If you just need the final one, then you need to create a segment. The segment should use Sequential Containers based on the use case and I dont see any other methods here including classification based on my understanding to the question.
Thank You, Pratheep Arun Raj B (Arun) | NextRow Digital | Terryn Winter Analytics