What should I do if my TM30 registration is dated before my move-in date?

The user moved into a new condo on October 10th but has a TM30 receipt from September 21st. They ask if it's acceptable to use this TM30 despite the date difference and whether they can self-register at the immigration office without the landlord's presence. Community responses suggest that having the TM30 filed on the earlier date is not problematic, as the key issue is being registered at the current address. Some advise printing the receipt as proof and note varying procedures at different immigration offices.