2048048 - Model settings could not be saved with HTTP 500 and ASSERTION_FAILED dump when changing Dimensions on a Model

• When replacing a secured dimension for a new one of the same type on a Model
• Web interface error:

Model settings could not be saved
Unhandled Error (HTTP Status:500): unmarshal.invalid.xml

• Dump on ST22:

Category               ABAP Programming Error
Runtime Errors         ASSERTION_FAILED
ABAP Program           CL_UJA_APPLICATION============CP
Application Component  EPM-BPC-NW-ADM
Date and Time          29.07.2014 07:10:19

        "ASSERTION_FAILED" " "
        "CL_UJA_APPLICATION============CP" bzw.
     "CL_UJA_APPLICATION============CM01Y"
        "MODIFY_BI_CONTENT"
  
Information on where terminated
    Termination occurred in the ABAP program "CL_UJA_APPLICATION============CP" -
     in "MODIFY_BI_CONTENT".
    The main program was "SAPMHTTP ".

• SAP Business Planning and Consolidation 10.0, version for SAP NetWeaver
• SAP Business Planning and Consolidation 10.1, version for SAP NetWeaver (Standard)

 assert sy-subrc is initial, CX_SY_SEND_DYNPRO_NO_RECEIVER, CX_SY_SEND_DYNPRO_NO_RECIEVER , KBA , EPM-BPC-NW , NetWeaver Version , EPM-BPC-NW-ADM , Admin , Problem