There are three options available for the legalisation of residence in Armenia:
How do these statuses differ?
Citizenship is a permanent solution to the displacement problem, as opposed to the
refugee status and residence permit, which are of a temporary nature;
You can apply for citizenship even after acquiring refugee status or residence permit
but after acquiring citizenship you cannot acquire refugee status or residence permit;
You can acquire citizenship before arriving in the RA but after that you cannot apply for the other two statuses anymore.
This information was retrieved from the Frequently Asked Legal Questions For Displaced People from Syria and Other Conflict Zones in Armenia Brochure