Section 501 of the act includes some other contexts as well as the context of deregistration, which is specifically in subsection 501(2). In subsection 501(3), you can see the various offences that could lead to deregistration currently, for example, entering into prohibited agreement, soliciting or accepting contributions contrary to the act, collusion, providing or certifying false or misleading information, making false or misleading declarations, and so forth and so on.
On October 18th, 2018. See this statement in context.