CCS2 project migrated to CCS5 is too big to fit in VC5502 memory

I am trying to migrate a legacy project that was developed under CCSv2.21 to CCSv5.2

Target: TMS320VC5502 with 32K x 16-bit (64K bytes) of on-chip dual-access RAM.
External Memory: 512Kbytes of high-speed SRAM accessed via EMIF.

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CCSv2.21.00 environment:
DSP/BIOS 4.90.270 (including CSL)
Code Generation Tools 2.56
DSPLIB 2.20.02
JTAG Emulator: Spectrum Digital XDS510PP PLUS via parallel port connection to Windows XP PC

See attached files:
CCS2_main.cmd (linker command file)
CCS2_main.cdb (DSP/BIOS 4 configuration)
CCS2_maincfg.cmd (generated BIOS linker command file)
CCS2_main.map (generated memory map file)

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CCSv5.2 environment:
DSP/BIOS 5.41.13.42
CSL 2.31.00.9
Code Genration Tools 4.4.1
DSPLIB 2.40.00
JTAG Emulator: Spectrum Digital XDS560v2 STM via USB connection to Windows 7 64-bit PC)

Building the application in CCSv5.2 fails with several errors like these:

"./maincfg.cmd", line 164: error #10099-D: program will not fit into available
   memory.  run placement with alignment/blocking fails for section ".clk" size
   0x8 page 0.  Available memory ranges:
   DARAM        size: 0x7f00       unused: 0xa          max hole: 0x4      
   .clk: block(0x20000), RUN_START(CLK_A_TABBEGb) {
"./maincfg.cmd", line 210: error #10099-D: program will not fit into available
   memory.  run placement with alignment/blocking fails for section ".idl" size
   0x8 page 0.  Available memory ranges:
   DARAM        size: 0x7f00       unused: 0xa          max hole: 0x4      
   .idl: block(0x20000), RUN_START(IDL_A_TABBEGb) {    
...

See attached files:
CCS5_main.cmd (linker command file)
CCS5_main.tcf (DSP/BIOS 5 configuration)
CCS5_maincfg.cmd (generated BIOS linker command file)
CCS5_main.map (generated memory map file)
CCS5_buildlog.txt

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Is a BIOS 5.41 application expected to require more memory than a BIOS 4.90 application?
I would be grateful if someone could point me to guidance to help me address this.
I would also be grateful if someone could point me to general guidance for migrating C55x applications from CCS2/BIOS 4 to CCS5/BIOS 5.

In the meantime, I will move modules from on-chip memory to off-chip memory to try to get something working.

Best regards,
Patrick McCloskey