Warlock/Binder/Anima Binder

Can a Warlock transition into an Anima Mage and still get both class benefits?

I’m talking about damage reduction, fiendish resilience, increased eldritch blast dmg, and the like on the warlock side and pact augmentation, 2 vestige binding etc on the binder part.

Reading the Anima Mage it seems to me as you can only keep advancing vestige levels and learning more invocations which sucks. Please help.