Merging Routes

So the merging routes part is easy. The hard part is routes with different heights. I am trying to get two routes merged together, the difference is about 20-25 meters. I've tried changing the altitude and it looks like it would work. The issue is when I merge them the altitudes seem to combine there by forcing the routes back to their original height differences. Is there any possible way to merge a route with out merging the altitude settings?

Add a baseboard between them and adjust the diffirence on there.
Cheers,
Mike

mikeaust said:

Add a baseboard between them and adjust the diffirence on there.
Cheers,
Mike

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Yea i could do that I was just being lazy. The two routes would merge beautifully as they are, except for the height difference.