diff --git a/editions/tw5.com/tiddlers/mechanisms/UpgradeMechanism.tid b/editions/tw5.com/tiddlers/mechanisms/UpgradeMechanism.tid
index ccc458dd5..fdcdac7be 100644
--- a/editions/tw5.com/tiddlers/mechanisms/UpgradeMechanism.tid
+++ b/editions/tw5.com/tiddlers/mechanisms/UpgradeMechanism.tid
@@ -25,8 +25,8 @@ tags: mechanism
 
 * Grouping plugins
 * Incoming tiddler preview
-* Better display text for plugins
-* Better handling of encrypted upgrades
+* ~~Better display text for plugins~~
+* ~~Better handling of encrypted upgrades~~
 * Docs
 * ~~Add upgrade plugin containing instructions and one-shot UI~~
 * ~~Suppressing $:/UpgradeLibrary and upgrade plugin from save~~
diff --git a/editions/tw5.com/tiddlers/messages/WidgetMessage_ tw-import-tiddlers.tid b/editions/tw5.com/tiddlers/messages/WidgetMessage_ tw-import-tiddlers.tid
index e1bd46db7..69328cda9 100644
--- a/editions/tw5.com/tiddlers/messages/WidgetMessage_ tw-import-tiddlers.tid	
+++ b/editions/tw5.com/tiddlers/messages/WidgetMessage_ tw-import-tiddlers.tid	
@@ -1,14 +1,19 @@
-created: 20140226084658099
-modified: 20140226195055502
+created: 20140716084658099
+modified: 20140716195055502
 tags: message navigator-message
 title: WidgetMessage: tw-import-tiddlers
 type: text/vnd.tiddlywiki
 
-The `tw-import-tiddlers` message inserts a list of tiddlers into the store. If multiple tiddlers are imported then a report is displayed; if only one tiddler is imported then it is displayed instead. The import message requires the following properties on the `event` object:
+The `tw-import-tiddlers` message inserts a list of tiddlers into the pending import tiddler [[$:/Import]]. It also applies any active ''upgrader'' modules to each tiddler as it arrives (see the UpgradeMechanism for more details).
 
 |!Name |!Description |
 |param |JSON text of the array of tiddlers to be imported |
 
-This message is handled by the NavigatorWidget.
-
 The import tiddlers message is usually generated with the DropzoneWidget or the BrowseWidget, and is handled by the NavigatorWidget.
+
+! Configuration Variables
+
+The variable `tw-auto-open-on-import` controls whether the `tw-import-tiddlers` message automatically triggers the display of the pending import tiddler [[$:/Import]]:
+
+* ''no'': The pending import tiddler is not opened in the story
+* ''yes'': The pending import tiddler is opened in th story. This is the default
diff --git a/editions/tw5.com/tiddlers/messages/WidgetMessage_ tw-perform-import.tid b/editions/tw5.com/tiddlers/messages/WidgetMessage_ tw-perform-import.tid
new file mode 100644
index 000000000..1053e02f5
--- /dev/null
+++ b/editions/tw5.com/tiddlers/messages/WidgetMessage_ tw-perform-import.tid	
@@ -0,0 +1,14 @@
+created: 20140716084242809
+modified: 20140716084341303
+tags: message navigator-message
+title: WidgetMessage: tw-perform-import
+type: text/vnd.tiddlywiki
+
+The perform import message copies tiddlers from a specified plugin into the main store. See the UpgradeMechanism for an overview of how it is used by the core.
+
+|!Name |!Description |
+|param |Title of the pending import tiddler. Defaults to ''$:/Import'' |
+
+To select which tiddlers are to be imported, fields with names formed from `selection-` plus the title of the tiddler are used. The value ''unchecked'' causes the tiddler to be skipped from the import.
+
+The perform import message is usually generated with the ButtonWidget and is handled by the NavigatorWidget.