how to: slab catalog items converting to compound slab catalog items

Question

1) is there an easy way to convert an existing slab catalog to a single layer compound slab catalog or do I really start all over 
 2) my slabs catalog is ordered by object classification (BBSfB) the slabs are ordered well (BBSfB), compound slabs are not showing the BBSfB - what is wrong? 
 added: my slab.xml, a start of compoundslab.xml and the BBSfB xsd

OBD 9.2 win10 
 
 regards Rik

Johan De Cock · Answer

RikR said: 1) is there an easy way to convert an existing slab catalog to a single layer compound slab catalog or do I really start all over 
 With the Datagroup Update Utility, every slab in the design file will be updated to a compound slab. 
 So I suggest you create a dummy file, place all the slabs you want to convert, then use this tool:

Johan De Cock · Answer

RikR said: 2) my slabs catalog is ordered by object classification (BBSfB) the slabs are ordered well (BBSfB), compound slabs are not showing the BBSfB - what is wrong? 
 The images are not showing. How do you use the BB/SfB classification? As an actual classification I suppose? If so, I haven't had any issues assigning custom classification scheme to CompoundSlab. It works just the same as for all other element types. 
 These are the steps I have written down some time ago when adding my own classifications: 
 For each custom classification 4 steps need to be taken: 
 1. Create XML file with relevant information, Place them in dataset/Data/Classifications 
 2. Add to "ClassifiationSystemLookup.xml" in dataset/Data/Classifications 
 3. Add to Classificationsystem.xml in dataset/DataGroupSystem 
 4. Add to Objectclassification.xsd in dataset /DataGroupSystem 
 => The custom classification will automatically be added to the "ObjectClassification" in the "Catalog Type Definitions" 
 I hope this can help you.