The following is the cut and paste from the order. Sounds like the child may enter but not the other parent.
The entire order can be read here:
https://manitoba.ca/asset_library/en/proactive/2020_2021/orders-soe-11192020.pdf
COVID-19 PREVENTION ORDERS
No gatherings at private residences 1(1)Subject to subsections (2) and (3), a person who resides in a private residence must not permit a person who does not normally reside in that residence to enter or remain in the residence.
1(2)Subsection (1) does not prevent a person from entering the private residence of another person for any of the following purposes:
(b) for a visit between a child and a parent or guardian who does not normally reside with that child: