not sure of exact dates....but this was for a model that had a SelfClean filter....not that I found them all that effective compared to the belt drive versions...
the filter type your talking about would have had a screen under the top portion, and operate on the same basis as a Maytag powerfin agitator mounted filter..
ther have also been cases where the actual filter top portion would not snap back in place and hold the filter, so in a pinch, for get the filtering idea, and using a bolt and a large washer, screw them both in place securely....I have a D2000 I had to do that to, since I coul not locate a working top section