If this setting is switched on at an interruption point, then the "Cross-reference (configurable)" (ID 24300) and / or the "Counter target in cross-reference" (ID 24351) properties show all counter targets.

If this property is activated and the project setting "Display target at pair cross-references" is deactivated, the setting trumps at the interruption point, and all targets are displayed.

If this property is deactivated and the project setting "Display target at pair cross-references" is activated, the first target is displayed.

Reference

InterruptionPointPropertyList Class
InterruptionPointPropertyList Members