EDIT: wrap around did some weird things. This post has my logic, but it also deletes needed things. My two more recent posts have a working fix.
I haven't given up on this yet, I am actually playing around with your save file directly now.
Also, don't feel bad about not understanding my rambling posts. I'll try and explain it a bit better.
I am using Notepad++ to directly edit the save files. Using a clean install and a working farm I am trying to troubleshoot exactly what code is wrong with the old save, and replace the old code with working, fresh code. When i am writing out code here, the outermost quotation marks designate code. Any additional quotation marks are part of the code.
One of the issues is with code that is on all characters. This code is between the words "production" and "farmoutcome". But, there are a whole lot of these instances. For the save you put on mega, there are 201. So what I use is a regular expression command in the search mode. "(?<=)" is a RegEx command to look behind and "(?=)" means look ahead. Next, I choose "(.*?)" to do a lazy search (first possible solution to problem). So, to select an instance of everything between the word "production" and "farmoutcome", and to have 201 separate matches rather than 1 giant one, I use the RegEx command "(?<=production)(.*?)(?=farmoutcome)" in the search function.
I first use "(?<=production)(.*?)(?=farmoutcome)" in the good save to get the good code. This looks like this "":"default","resistance":-1,"restrained":false,"sedative":0,"stallbedding":"dirt","timesmilked":0,"usesedative":false,"workstation":"free","zones":{"sleep":"dirt","sleepfurnishings":[],"work":"free","workfurnishings":[]}},"" (Reminder: if you want to copy and paste my stuff directly please remove the outer most quotations)
I then go to your save, go to the replace feature, and enter "(?<=production)(.*?)(?=farmoutcome)" for the Find what and that big chunk of code in the Replace with. I then hit replace all.
However, I am having issues with the other fix I managed. You have an instance of ""resource","array":" in your save, which is the start of the code I want to replace. But I can't find where it should end. I am looking through this now and will reply to any comment you leave on this when I find the answer.