Preferences section title changed to "import_export".

pyqso/adif.py

@@ -235,7 +235,7 @@ class ADIF:
         # ADIF-related configuration options
         config = configparser.ConfigParser()
         have_config = (config.read(expanduser("~/.config/pyqso/preferences.ini")) != [])
-        (section, option) = ("adif", "merge_comment")
+        (section, option) = ("import_export", "merge_comment")
         if(have_config and config.has_option(section, option) and config.get(section, option) == "True"):
             merge_comment = True
         else: