Hi, No it isn’t possible for now.
Font files are made only with outlines, FontArk’s engine is based on Skeletons and the connection of it to the SmartXs. In order to benefit of the character connectivity and advance Outline control you have to create the Skeleton directly with FontArk tools, luckily, creating a new Skeleton (or modifying and existing template) is quite easy and fast.
If you’d like to use an existing font as reference while creating a skeleton you can make the existing font show up as Watermark in the background of each character work area with the Watermark feature. Any web-font or locally installed fonts (those installed on your computer) can be easily set as Watermark.