Have you ever tried to connect a VCR to a high definition television?
I never thought I’d be mentioning those two pieces of technology together until my parents bought an HDTV a few weeks ago. Their piles of VHS tapes and lack of technical prowess meant that it was on me to solve the tricky predicament of taking an aged piece of technology and getting it connected to new technology. After multiple trips to the local electronics store and consulting different experts, I was finally able to get it to work. Can these two pieces of technology be used together? Yes, but it takes a substantial amount of work. Were the results underwhelming? Yes. Did it take much longer than anticipated? Yes. Did it cost more than I anticipated? Yes. Does it take full advantage of the new technology? No.
This is not much different than the struggle that traditional on-premises EDI providers have had integrating EDI into and out of Dynamics 365 for Operations.