I have selected a string block which contains double quotation marks in the editor, such as ["myname"],and I invoke externalize string command,and I find value for source is also contains double quotation marks.I think double quotation marks should be removed from source value,otherwise new line in properties file is key="myname",and I think this is not our intention.
Another feature is memory for previouse Replacement selecting,otherwise I must select Replacement again.
Maybe I cann't express my idea very clearly,and I put an attachment describing this case. I like this plugin very much,and it is a great plugin. Dmitry Kashin,thanks. :)