The ride height and travel are separate. Surprisingly, with no preload and the same height settings the car didn't need raising either - it may have sagged a few mm, but if it did then it worked out to sit where I like it. It does use a bit more travel than it did before, but I have some way to go before it bottoms out and I feel better knowing its doing what its meant too rather than just being really hard.
These are totally different shocks, but it shows how adjusting the travel and spring compression are independent from each other.