Not an issue at all brother. The earlier rejection meant that you are not 1112 and could be 1111. Both the NOCs are in same field - it is not unusual for a person having experience in both the NOCs - just think about CFO. Just mention previous roles you mentioned and current roles in 1111. But don't try to misrepresent.
There is some specific section of law on this - cannot remember where I found it. It is like this -If an applicant wrongly claim something, and if in the next application s/he rectify it, his application will not be affected for previously wrong claim. ;D ;D ;D
Apply with confidence.