Every time I watch this movie I fall in love with it completely all over again. I never really understood people who would say that the plot was convoluted, probably only for those that haven't seen the original series.
In short, this is actually the first 3 Digimon movies from japan cut and pasted together to be released in America. The plot was altered to flow better, and in my opinion, made the entire movie better as it would cut out all the boring bits.
Probably not a film for everyone, but if you've seen the original series and liked it, I would recommend it!