Hello,
I have a column with a powerFX formula. If I try to export the solution (as unmanaged) and import it into a new environment using a pipeline, I get the following error:
...
Error: Exception type: System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault]
Message: Error while importing Formula fields name [solution]_[columnName]Detail:
...
FormulaDefinition file is missing from import zip file: FileName: /Formulas/[solution]_[entity]-FormulaDefinitions.yaml
...
In fact, the "missing" file is in the unpacked solution:

But if I try to export it either managed or unmanaged manually (without pipelines), I have no problem importing it to another environment. I know this feature is in preview, so is it possible that it's a bug?