Rating and mp3tag/MediaMonkey sync problem

I have made some more investigations.
I have set up a test case using this action group ...

Begin Action Group Test_2014#20140510.Test.RATING_MM

Action #1
Actiontype 9: Remove fields
Fields to remove (semicolon separated): RATING MM;POPULARIMETER

Action #2
Actiontype 5: Format value
Field ______: RATING MM
Formatstring: '-\\\\-\\\\-\\\\-\\\\-\\\\-\\0\\0.5\\1\\1.5\\2\\2.5\\3\\3.5\\4\\4.5\\5\\5.5'

Action #3
Actiontype 5: Format value
Field ______: POPULARIMETER
Formatstring: 'no@email|255|0'

End Action Group Test_2014#20140510.Test.RATING_MM (2) (3 Actions)

... and got the following result ...

Action .....: Format value Field ......: RATING MM Formatstring: '-\\\\*\\\\*-\\\\**\\\\**-\\\\***\\\\***-\\\\****\\\\****-\\\\*****\\\\*****-\\\\0\\\\0.5\\\\1\\\\1.5\\\\2\\\\2.5\\\\3\\\\3.5\\\\4\\\\4.5\\\\5\\\\5.5' ============================================================= TAGFIELD_______INPUT_____DISPLAY_________FRAME_POPM_____HEX RATING MM '-' 0.5 no@email|13|0 0D RATING MM '*' 1 no@email|23|0 17 RATING MM '*-' 1.5 no@email|54|0 36 RATING MM '**' 2 no@email|64|0 40 RATING MM '**-' 2.5 no@email|118|0 76 RATING MM '***' 3 no@email|128|0 80 RATING MM '***-' 3.5 no@email|186|0 BA RATING MM '****' 4 no@email|196|0 C4 RATING MM '****-' 4.5 no@email|242|0 F2 RATING MM '*****' 5 no@email|252|0 FC ------------------------------------------------------------- Note: Illegal RATING MM '*****-' Mp3tag changes to POPULARIMETER no@email|255|0 no@email|255|0 FF ------------------------------------------------------------- RATING MM '0' 0 no@email|0|0 00 ------------------------------------------------------------- RATING MM '0.5' 0.5 no@email|13|0 0D RATING MM '1' 1 no@email|23|0 17 RATING MM '1.5' 1.5 no@email|54|0 36 RATING MM '2' 2 no@email|64|0 40 RATING MM '2.5' 2.5 no@email|118|0 76 RATING MM '3' 3 no@email|128|0 80 RATING MM '3.5' 3.5 no@email|186|0 BA RATING MM '4' 4 no@email|196|0 C4 RATING MM '4.5' 4.5 no@email|242|0 F2 RATING MM '5' 5 no@email|252|0 FC ------------------------------------------------------------- Note: Illegal RATING MM '5.5' Mp3tag changes to POPULARIMETER no@email|5|0 no@email|5|0 05 ============================================================= Action .....: Format value Field ......: POPULARIMETER Formatstring: 'no@email|255|0' ===================================================================== TAGFIELD_______INPUT_____________DISPLAY_________FRAME_POPM_____HEX POPULARIMETER 'no@email|255|0' no@email|255|0 no@email|255|0 FF =====================================================================

DD.20140510.1144.CEST