No, "ue" is simply another way to write ü. The pronunciation of ü is the same as the pronunciation of ue. It is a mixture of an ee-sound with an oo-sound. It is distinct from the un-umlauted u.
If you google Heinrich Mueller, the first result will be the Gestapo chief's Wikipedia entry, complete with an umlauted ü.
117 posted on 05/29/2018 12:14:01 AM PDT by cynwoody