In your message, you quoted the version as 6.2B. Could you re-post the entire version code (including any 6-digit release dates if applicable)? It may be that you are running an order version that doesn't know how to interpret 2-digit years. Also if you can tell us the version of the Windowing System Manager, that would be helpful. You can get all of this information from "F3 - list versions"

I don't know specifically what is happening here, but the first place I would check is the import file itself. To create a '2-digit' year format, YYMMDD, all six characters have to be there, including leading zeroes. Sometimes applications (like Excel) strip those leading zeroes which causes incorrect dates to be recognized.

Format your date values as Text (rather than numbers) in the import file. So for today's date, this would be "030122". Jan 1/1980 would be "800101".

Is there a requirement to go back to 1980 for the first date? Would 1990 suffice for what you want to do?