2616973 - Fiori Reference of Business Catalogs versus Technical Catalogs

• Question regarding Fiori Reference between catalogs
• We have 2 catalogs: one custom technical catalog (TC or Z_*_TC*) and one custom business catalog (BC or Z_*_BC*) - what is different between them?
• During customization, if we have a "custom" business catalogue (zBC) that was referenced from a "custom" technical catalog (zTC)
• And the technical catalog reference from a SAP standard technical catalog
• When we remove the reference to the custom technical catalogue (zTC), the custom business catalogue does not get updated (zBC) 
• The app tile icon shows white (unconnected) instead of blue (connected)   
• It seems as if the business catalog reference is made to the sap standard technical catalog, although the custom "business catalog" referenced the custom "technical catalog"  
• What needs to be done for the reference of the custom "business catalog" to only point to the custom "technical catalog" and not to the SAP technical catalog?
• Example:
  
  SAP - Technical Catalog (SAP_TC_CO_COMMON) --> Custom Technical Catalog (Z_*_TC*) --> Custom Business Catalog (Z_*BC*)

• SAP NetWeaver 7.40/7.50/7.51/7.52
• SAP S/4HANA 1610/1709/1809

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