Yes, that is one potential problem with lifting the edge - cut strop. But, lifting the edge while the razor is still moving (but ensuring the spine stays in contact) is one of the secrets to smooth and fluent stropping, which in turn is how you develop speed. The secret is all about timing it right so that you don't nick the strop by setting the edge back down too early. But that is a slightly more advanced area that is best left until you are comfortable with the basic stropping technique.

James.