diff -r 7a98a5020c44 -r 6b255a0c4e3e plover-gtk/transactionhelper.c
--- a/plover-gtk/transactionhelper.c	Fri Jun 08 17:05:27 2018 +0100
+++ b/plover-gtk/transactionhelper.c	Fri Mar 22 11:50:12 2019 +0000
@@ -57,6 +57,10 @@
 
 static guint signals[N_SIGNALS];
 
+static PloverTransaction *
+  plover_transaction_helper_new_transaction(PloverTransactionHelper *helper,
+  GError **error);
+
 static void plover_transaction_helper_finalize(PloverTransactionHelper *helper)
 {
     PloverTransactionHelperPrivate *priv;
@@ -286,7 +290,23 @@
       "SIRemoveExisting"));
     if (gtk_toggle_button_get_active(button))
     {
-	transaction=plover_transaction_new_remove(NULL,&error);
+	transaction=plover_transaction_helper_new_transaction(helper,&error);
+	/*
+	 * I think we want switch to the alternate installed set in the case of
+	 * alternate_database_clashes, but not in the case of
+	 * active_database_is_incompatible (see
+	 * plover_transaction_helper_update_summary_page).
+	 * Whether testing for helper->alternate_installed is sufficient I'm
+	 * far from clear.
+	 */
+	if (helper->alternate_installed)
+	    plover_transaction_set_installed(transaction,
+	      helper->alternate_installed);
+	if (transaction && !plover_transaction_remove(transaction,NULL,&error))
+	{
+	    g_object_unref(transaction);
+	    transaction=NULL;
+	}
 	if (transaction)
 	{
 	    save_transactions=helper->transactions;