How may I import MediaMonkey ratings?

[chrisjj]

With Detlev's input, I have devised this solution.

These MediaMonkey tracks

through custom script exporting path and Rating give:

S:!DJ DAP\development\MM Rating export\Rating test - Copy\A unknown.wma -1
S:!DJ DAP\development\MM Rating export\Rating test - Copy\B 0.wma 0
S:!DJ DAP\development\MM Rating export\Rating test - Copy\C 0.5.wma 10
S:!DJ DAP\development\MM Rating export\Rating test - Copy\D 1.wma 20
S:!DJ DAP\development\MM Rating export\Rating test - Copy\E 1.5.wma 30
S:!DJ DAP\development\MM Rating export\Rating test - Copy\F 2.wma 40
S:!DJ DAP\development\MM Rating export\Rating test - Copy\G 2.5.wma 50
S:!DJ DAP\development\MM Rating export\Rating test - Copy\H 3.wma 60
S:!DJ DAP\development\MM Rating export\Rating test - Copy\I 3.5.wma 70
S:!DJ DAP\development\MM Rating export\Rating test - Copy\J 4.wma 80
S:!DJ DAP\development\MM Rating export\Rating test - Copy\K 4.5.wma 90
S:!DJ DAP\development\MM Rating export\Rating test - Copy\L 5.wma 100

Imported by Mp3tag Textfile- Tag http://i.imgur.com/h7HEJNx.png gives http://i.imgur.com/2TvYWfC.png .

Then, this action group

Format value "RATING WMP": $replace(%rating_mm_raw%,100,5,90,4,80,4,70,3,60,3,50,2,40,2,30,1,20,1,10,1,0,1,-1,)
Format value "SDB/RATING": $replace(%rating_mm_raw%,-1,)

produces

This is the correct recreation of the fields representing Rating for MM, confirmed by viewing again in MM:

It is worth noting that while this is successful for my requirement to restore MM Ratings from a MM database export, it is much less successful for using Mp3tag to edit MM ratings since there seems no way for the user to configure Mp3tag to compute the MM representation. That requires a fix to Mp3tag's implementation of %rating mm% for WMA /t/12523/1 .