You can now repair old files using the Work Zone File Update Wizard!

You can install the Work Zone File Update Wizard to make any of your old files work on any version after 1.0A. Simply upload a file created before 1.0A and use it to update all of its contents to work on new versions. Your file will not be fixed exactly how you wanted it to be due to the old save system lacking many important details, so your file will have to adjusted after it is loaded. The update wizard is not a reliable tool to repair all files, and there may be some inconsistensies and issues related to the old file, but it is helpful when it is needed.

I also updated some stuff on the page, mainly correcting the work "taskbar" to "toolbar" a few times.