SLPK file from point cloud generated reality model

Hello,

I would like to ask if there is a way in ContextCapture how to generate a SPLK file from a project built upon point cloud data only. We have done this previously with projects built from UAV images. In our current project, we are generating reality models based on point cloud only and when choosing an output format, the option for 'ESRI i3s scene database' is greyed out and inaccessible. 

Am I doing something wrong my previous steps or is this option really missing in CC? Subsequently, would anyone know if there is other way how to produce the SPLK file? 

Thank you for any suggestions you might have.

Regards, 

Lukas