[Jiaz]

Originally Posted by Soporius

Do you mean that a specific 'illegal' character will be replaced with a speicific 'legal' character consistently? I have no problem with renaming post-download, it's just that currently I don't know exactly what character '_' is replacing.

Check with next update, you can now define the replacement by yourself, see Settings->Advanced Settings->
GeneralSettings.filenamecharacterregexreplacemap
GeneralSettings.packagenamecharacterregexreplacemap