Signed a paid up lease with Vickery and then got a division order from Antero

As a noob small % mineral rights owner in Tyler Co, WV (inherited the interest recently), Vickery Energy used Penterra (administrative services company) to get me to sign a paid up O&G lease with Vickery, which I signed and returned, and about a month later I received a division order not from Vickery but from Antero. What should I ask Vickery and Antero about this apparent change in ownership of my lease? Was it assigned to Antero? Etc. Thanks in advance.