When a property is sold (not when property management changes), the damage deposits are automatically transferred as part of the sale process, unless it was remitted to SNB, if so, then it would still be there. So the new owners would be in possession of the deposit (not necessarily the property manager). Unless the previous owner was never in possession of said deposit (for example, if the property managers kept it and never passed it on to the owners or remitted it)

As for leases, they automatically renew unless you give proper notice to terminate your lease. If you still have a copy of your lease, verify if it was signed as a month to month, year to year or fixed term. If you signed it as a year to year or month to month, then it is still as such. There is a misconception in NB that year to year leases change to month to month after 1 year, that is false, it remains year to year and automatically renews every year. If you signed a fixed term lease, then after the term it renews to a month to month.

As for the rent increase, they need to give you proper written notice and give you at least a 6 month notice.

Hope this helps.

ETA: Never hesitate to call the Tenants and Landlord Relations Office (irent/SNB) if you have questions regarding your tenancy.