Of the 30+ races I did last summer, two of them showed up on USA cycling.
Don't worry about it until you're applying for your 4->3 or 3->2. To be honest, no upgrade rep is going to care enough to question any of your results going from 5 to 4. I included links to race results in my race resume to make up for the lack of info on the USA Cycling website. I think the 3s will be more likely to have their results documented, especially if I do more superweek races this summer.