Thank you
Currently the below link does not say anything regarding 3212
https://www.canada.ca/en/immigratio...s-entry/documents/education-assessed/how.html
However i was wondering if I start a new application with a new primary occupation code, will cic refer back to my previous application and question why I have changed my Primary code?
They may refer and it will form part of the history, but it won't be viewed as anything negative in itself. So you should be good. I would suggest maybe to have a call with an immigration consultant re-evaluation of your education and if anything extra has to be done to comply with noc code requirements.