In working with Visual Analytics I found a minor bug that if your object depends on a filter of a custom category, SAS will turn off the ability to export the details for that object. You will still be able to export the formatted report, but the detail checkbox will disappear.
It can be easy to work around in that you can make the filter depend on the base Category and everything will work again, but it can be hard to trouble shoot.
This was in SAS 7.4