Canada PR - NOC Related

Dear All, I am on a Closed WP with NOC code as 2171. However, my prior experience has roles/responsibilities related to 2173. Even in current job, i have few responsibilities which fall under 2173. Can i create Express Entry profile with NOC code as 2173 instead of 2171? Will that be an issue as my current closed WP is on 2171?

If i have 10 years of experience, can i use NOC 2173 for the first 6-7 years of my prev employers and the remaining 3 years as 2171 on the EE profile?

Please advise