I very rarely remove and reapply, it's my thinking that it causes less damage on the natural nail to infill/rebalance as you're only prepping the new growth and where you've had to file any bits of lift off, rather than soak in acetone, remove, then prep the entire nail. I do a lot of acrylic design work so I always put down a layer of clear acrylic that I can file back to at each redesign and as it's clear I can see if there are any issues with the natural nail underneath.