If you have 3 years of work experience then submit it provided you get letters from your previous employers. If you cann't get letters the show only the years that you can get letters for. When you submit an EE profile, you will have to mention if you have ever applied for any visa in canada and if so, then you will have to provide the UCI number. I don't think they will compare EE documents with study visa documents. So if you have worked for 3 years then submit the experience letters and if you have only worked for 2 years then submit letters for that.thanks .
i have another question, i applied for student visa after 3 years of my bachelor's graduation and i submitted 2 years of indian work experience. Can i add remaining one year of work experience when i will my Express entry ? and do they check all documents which i submitted for study visa?