CBSA released a statement discouraging visit to the border to update the immigration status till further notice due to Coronavirus situation:
Source: https://www.cbsa-asfc.gc.ca/noncan-eng.htmlTravel for the purpose of obtaining immigration services is non-essential. If you are in Canada, and are seeking to travel to the border in order to make an application for a work permit, study permit or permanent residence, you are asked to consider federal and provincial guidelines for self-isolation and social distancing. Do not travel to the border for these services until further notice.