Start date is missing for the delta export Error

I have an export setup as a delta export type. This works fine until I add any kind of transformation to the exported data. As soon as any transformation is introduced, I get the error message shown below and the flow fails. Is there something I am missing that needs to be done special for the delta export in the transformations?

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@michaelgantt what connector are you using?

@michaelgantt looks like a bug when delta export is used with transform 2.0 and you use test mode. We've logged it internally and hope to fix soon. For now, preview and actual flow run will work.

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