We have logged this as a bug, but here is the problem. Opening a report xml through the local open option and we find that various characters are stripped from the report. The euro sign (€) disappears, whereas the dollar sign ($) is kept. ä disappears.
If I open the XML in Notepad ++ ,copy the contents and use this to generate the report in RS through open from clipboard, then all characters are okay.
This is pretty nasty, especially with German versions. Version is 8.4.1. Might I ask if this is the same with your installation(s)?