Setting a script abc.bat to be run with arguments "test" ""test"" \"test\" will make Bamboo run the following in the terminal:

abc.bat test test test

The problem also happens with arguments containing spaces like "-f c:\file repo\test.txt"

abc.bat -f c:\file repo\test.txt

Currently it is not possible to force a quote char to be part of the argument string or to use arguments with spaces.