Yes. All versions of older AggFlow files are compatible with the new program. All files from the USB program can be imported as projects or revisions into projects in AggFlow DM or opened directly on to a worksheet. AggFlow DM is a newer program that has upgrades not available to the USB program, so projects created in the latest Aggflow are not compatible with the older USB only program. With AggFlow DM, you will have no problem importing your plant files created from the previous versions of AggFlow.