Keep message info

app/src/main/java/eu/faircode/email/BoundaryCallbackMessages.java

@@ -582,7 +582,6 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
                     db.folder().setFolderError(browsable.id, Log.formatThrowable(ex));
                 } finally {
                     isub[j] = null;
-                    //((IMAPMessage) isub[j]).invalidateHeaders();
                 }
         }
 

app/src/main/java/eu/faircode/email/Core.java

@@ -1406,7 +1406,6 @@ class Core {
             boolean download = db.folder().getFolderDownload(folder.id);
             List<EntityRule> rules = db.rule().getEnabledRules(folder.id);
 
-            try {
             FetchProfile fp = new FetchProfile();
             fp.add(FetchProfile.Item.ENVELOPE);
             fp.add(FetchProfile.Item.FLAGS);
@@ -1440,9 +1439,6 @@ class Core {
 
             if (!stats.isEmpty())
                 EntityLog.log(context, account.name + "/" + folder.name + " fetch stats " + stats);
-            } finally {
-                ((IMAPMessage) imessage).invalidateHeaders();
-            }
         } catch (MessageRemovedException | MessageRemovedIOException ex) {
             Log.i(ex);
 
@@ -2981,7 +2977,7 @@ class Core {
                             db.folder().setFolderError(folder.id, Log.formatThrowable(ex));
                         } finally {
                             // Free memory
-                            ((IMAPMessage) isub[j]).invalidateHeaders();
+                            isub[j] = null;
                         }
                 }
             }
@@ -3051,7 +3047,6 @@ class Core {
                         } finally {
                             // Free memory
                             isub[j] = null;
-                            //((IMAPMessage) isub[j]).invalidateHeaders();
                         }
                 }
             }

app/src/main/java/eu/faircode/email/Log.java

@@ -1409,12 +1409,6 @@ public class Log {
                             "failed to create new store connection".equals(ex.getMessage())))
                 return null;
 
-            if (ex instanceof MessagingException &&
-                    ex.getMessage() != null &&
-                    ex.getMessage().contains("invalid message sequence number"))
-                // invalid message sequence number: message is probably expunged
-                return null;
-
             if (ex instanceof MessagingException &&
                     ex.getCause() instanceof ConnectionException &&
                     ex.getCause().getMessage() != null &&