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After importing your Smart Lists from HubSpot, occasionally you may find that some audiences did not sync to Perfect Audience.
When we import Smart Lists over from HubSpot, we are actually importing the rule (it is called a "filter" in HubSpot) that creates the list.
Second, we only import a subset of Smart Lists from HubSpot . At the moment we are only importing Smart Lists that use filters with a "PageView" property, but we do have plans to support more list types in the future.