Is there a way to find all segment units with empty custom field values in a TM?

Question

How can I filter all segment units in a TM that don't have any custom field values if I don't know any system field value (date, created by and so on)? 
 Thank you!

Paul Filkin · Answer

Erika Salsnik 
 I'm pretty sure this isn't possible in Studio. You could export to TMX and then use Olifant though. Would be fairly straightforward to show the fields in the grid and then sort them to find the null values.

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Is there a way to find all segment units with empty custom field values in a TM?