Yes. I have it, though I was never able to play it. Still have my hard copies and a load of PDFs from a recent Humble Bundle.
The benefit of sticking with the current edition would be that I get to use the books I've already bought (which are like 10 volumes of this campaign) and it's all automated on Foundry.
Converting it to Savage Worlds or a previous edition would be work. Then putting all that in Foundry would be additional work. Plus teaching the players a new system.
I mean, absolutely yes, I will do it if they want to stick with the campaign. But if they can't be bothered to right down the names of their main suspects in a demonic cult investigation that is poised to bring about the destruction of the city in a matter of days, why should I bother? It's clearly not connecting with them, and I doubt if changing systems would impact that much.
And if you're not getting into the story, mystery, and politics of The Enemy Within, I don't think there's a point. It's like trying to play Tomb of Horrors without traps.