timidi
John,
It's been awhile but, I remember something with volume offsets or something, among other weirdnesses.

I can't say. My wrk files were simple. Many have automation. None had any offset issues. Not having plugins I used in those days is the only issue. But not an insurmountable one. In my case they just open and often ask for missing plugins but thats pretty much it. 
 
I have noticed some users seem to have all sorts of problems with not just wrk files but all CW files. Why this is I don't know. All I can say is I haven't. I have hundreds of them.