Dynamic View - Missing newly added field in filter drop-down

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I've added a couple new fields to a Smartsheet and am looking to filter against them within Dynamic Views.

Within Dynamic Views settings I've added these fields to both the View Display "Visible Fields" and Details Panel "Detail Panel Layout". They are showing up when I get out of Settings and back to the unfiltered view.

These fields however are NOT SHOWING UP in the filter set-up drop-down list when either modifying an existing filter or adding a new.

Anyone have a resolution for this?

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