The .VP3 format is supported on Husqvarna Viking and Pfaff machines. It is popular for the maximum detailed shape of the embroidery. It IS possible to edit it in Premier+™ Embroidery Software, 5D™ Embroidery Software, Embroidermodder. Embroidermodder is open source and thus free to use. However, we always recommend using paid software for modifications, as the functionality of software like Chroma is a level higher.