Due my oversight, the code for extracting ODB dumps from MIDAS data files from rootana/old_analyzer/event_dump.cxx was missing in 
manalyzer.cxx.

This is now corrected, the new manalyzer command line flag is "--save-odb", to use it:

daq00:manalyzer$ ./manalyzer_test.exe --save-odb ~/git/midas/testexpt/run00002.mid.lz4
...
Saving begin of run ODB dump for run 2 from "/home/olchansk/git/midas/testexpt/run00002.mid.lz4" to "run2bor.json"
...
Saving end of run ODB dump for run 2 from "/home/olchansk/git/midas/testexpt/run00002.mid.lz4" to "run2eor.json"
...

manalyzer commit f4cbcb7426083edc9f74298965c90a3a91f461ab

K.O.