So we finally upgraded to the latest version of the explorer app on iOS (v.17.1.2 of app running on iOS 10.3.3), serving up maps from our Portal for ArcGIS instance through a VPN to the device. One of the things we were keen to make use of (and part of the reason for the upgrade) was the related records capability, of which we have quite a few. However, when I interrogate those map layers containing related records I do not see them. Are there any specific requirements for this to work, or has anyone else come across similar issues?