Thats interesting you are using LiquidText in your workflow - I have sent my protests to them, as the file is “captive” and not accessible to the operating system directly.
I did a lot of beta testing for them, and have taken the application to the limit. But then I found I couldn’t use those features practically with projects. Inside relevant folders on my choosing. It’s a shame, because its a really good application… (bit of a ferrari in a garage, but without a garage door key…)
I simply would like to edit LT file and save in iCloud - but that’s IMPOSSIBLE.
Why do they do this? My opinion is that they are building in a handicap ready to offer a PAID syncing service between devices. If true, this seems totally unethical to me — to remove base level functionality like saving a file.., only to offer a paid workaround.
My replacement for LT (and mind maps) is DT…
Why?
(1) LT can get a bit slow - and require lots of mousing, meandering, scrolling, clicking … to get relevant info---- Whereas a search on DT gets me to that doc nexus faster. Along with associated doc context.
(2) LT has a huge number of visuals - at some point this distracts the thinking process. I’ve seen this effect with larger maps. If you see too much of the background, it distracts------DT is not visually distracting. I use the magnification on the Mac (hold down control and slide forward with two fingers on trackpad), which is the equivalent of concentrating.
(3) LT will not work conveniently with other applications - eg I once tried to drop an LT file within DT, but I knew I couldn’t use it ( I think this illogical action was my subconscious, wishing for this option…) For those not aware of the problem, this is what happens. The file opens up, and it generates a copy within the LT space (not accessible to the OS, and further duplicating content it already has). If you update anything, it stays inside LT. You can export, but after all the steps and fiddle, was this all worth it to save a file. My conclusion. No----- So far DT works with everything else in its environment- that’s important!
(4) LT does update the pdfs, but this is buggy. And messy. I can’t really rely on it ---- DT, I can, so far 
Conclusion - Remove LT… until they unlock it to the OS. It’s more problems than it is worth at the moment.
With respect to references I use “Bookends” and Google Scholar.
My workflow thoughts?
Use Macbook, iPad, DT 3, Bookends, Google Scholar, Ulysses