It is best to just find / replace <m_ with _ using Visual Studio (search / replace regular expressions).
< means the beginning of a word.
Edit: There seems to be no way using Find / Replace to change the shell of this first letter after underlining.
So, you will need to perform this operation 26 times in a row, for example:
Replace <m_A by _a Replace <m_B by _b
and then you are all set up. Fun too :-) But it only takes a few minutes.
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