I've been using Embird seems like forever. When I got my 1st embroidery machine, a Viking Designer 1 that takes a floppy, Embird didn't have the capacity to transfer designs to a floppy so I got Viking's 3D Embroidery program at an outrageous price. Didn't know better back then. Anyway Embird has since changes so I can transfer designs to a floppy though I haven't needed to try as I got another embroidery machine, Babylock Ellegeo (have since then upgraded to Ellegante). Have upgraded this program everytime they do and recently acquired their add-on "Font" as I do mostly quilting labels.
I've used Embird to resize, merge, delete parts, split, etc. and its so easy to figure out how to do this with all the videos out there to help you. The price is quite reasonable compared to others I've checked out too. And as someone mentioned, they have a 30-day trial you can download to see if it will do what you want.