WP All Import support team are awesome. We’ve submitted 2 issues and they replied within 24 hours.
The first one was solved in 24 hours, the issue was to add support for validated_field type (http://wordpress.org/plugins/validated-field-for-acf/).
The second one, is about date_picker in repeater field. Though it took a bit longer but they work and fixed it in less than 10 days, just before Dec 25.
Now for the plugin itself, we found version 4 much better. With above issues solved WPAI v4.0.7 is now working with ACF v4.3.9 + ACF:Repeater Field v1.1.1 + ACF:Validated Field v1.3.1 + WPAI:ACF Add-on 3.0.2.
