No, you can't "convert" an LMIA into anything. All it does is give an employer the authority to employ you. You will have to apply for PR via one of the normal immigration streams, just like anyone else, if and when you qualify. http://www.cic.gc.ca/english/immigrate/eligibility.asp
but I read on CIC website which says there are dual intent LMIAS
Employers who wish to hire skilled foreign workers through 1 of these immigration programs may also want to hire these workers temporarily while their application for permanent residence is being processed by IRCC. As a result, employers can apply for a dual intent Labour Market Impact Assessment (LMIA) which requires paying the processing fee. These dual intent LMIAs can be used to support the foreign nationals’ application to IRCC for a:
permanent resident visa; and
temporary work permit.
but I read on CIC website which says there are dual intent LMIAS
Employers who wish to hire skilled foreign workers through 1 of these immigration programs may also want to hire these workers temporarily while their application for permanent residence is being processed by IRCC. As a result, employers can apply for a dual intent Labour Market Impact Assessment (LMIA) which requires paying the processing fee. These dual intent LMIAs can be used to support the foreign nationals’ application to IRCC for a:
permanent resident visa; and
temporary work permit.
Yes, they form part of the application process via Express Entry and will add extra points to the CRS Score. Normally, this will be an extra 50 points but it's only part of the requirements. They are not, in themselves, a guarantee for an Invitation To Apply for permanent residency.
