Exporting an array of PSCustomObject's where one of the properties is a HashTable

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PowerShell

I need to export an array of PSCustomObjects (which contains data about each member of a group), where one of the properties is a HashTable with specific personal data about the group member.

I guess I should use a 'Calculated Property' to group these specific personal data in one single property.

Do you know any simpler/better solution?

Improvement: I want to export the data array to a CSV file.