Import/export expireTimerVersion

protos/Backups.proto

@@ -244,6 +244,7 @@ message Chat {
   bool markedUnread = 7;
   bool dontNotifyForMentionsIfMuted = 8;
   ChatStyle style = 9;
+  uint32 expireTimerVersion = 10;
 }
 
 /**

ts/services/backups/export.ts

@@ -422,6 +422,7 @@ export class BackupExportStream extends Readable {
                   DurationInSeconds.toMillis(attributes.expireTimer)
                 )
               : null,
+          expireTimerVersion: attributes.expireTimerVersion,
           muteUntilMs: getSafeLongFromTimestamp(attributes.muteExpiresAt),
           markedUnread: attributes.markedUnread === true,
           dontNotifyForMentionsIfMuted:

ts/services/backups/import.ts

@@ -1105,6 +1105,7 @@ export class BackupImportStream extends Writable {
       chat.expirationTimerMs && !chat.expirationTimerMs.isZero()
         ? DurationInSeconds.fromMillis(chat.expirationTimerMs.toNumber())
         : undefined;
+    conversation.expireTimerVersion = chat.expireTimerVersion || 1;
     conversation.muteExpiresAt =
       chat.muteUntilMs && !chat.muteUntilMs.isZero()
         ? getTimestampFromLong(chat.muteUntilMs)