You can look at the output of phpinfo(); to see what modules are loaded. I have SimpleXML installed as well, which is tried first, so that is probably what ended up being used.
One potential issue that I ran into: if the export file does not validate properly, the parser will fail and move on to the next one, ultimately using the Regex parser that has the newline issue. On a Mac, “xmllint —noout file.xml” will give you a quick check to see if your import file is valid, I’m sure you can get something similar on Linux.
My file had a single random control character inserted in a post body somewhere, which needed to be removed before it would import properly.
