Work experience conflicts between applications

[panteasami]

Hello, I came to Canada as a student and so far I have submitted two study permit and one open work permit after graduation, which are all approved. I have more than one year foreign work experience from my home county but I did not claim that work history in my study permits and work permit applications because I did not have Employment Insurance (EI) for my job and I thought it will not be accepted by Canada so I did not claim it. However, I have told that I can use that experience to apply for foreign work experience stream in Express Entry. My question is that considering I have not mention this work experience in my past applications, would it cause a problem in my express entry application?