When you import chat history into a chat from other apps, imported messages will be sorted by original sending date and merged with existing messages in:
Unfortunately, it is not possible to merge existing and imported message histores in chats which have more than 1000 messages and in large groups (or groups with altered settings: e.g., with "message history" set to visible for new members, etc.)
In the cases when it's not possible to merge histories, imported messages are placed into the moment when they were imported. All messages include their original timestamps and follow one another in the correct order.
To make it easier to navigate chats where merging is not possible, you can pin the last message in the chat before you import messages. This way you can quickly jump past the imported messages if you need something above them.
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“Messages will be imported into the current day but will also include their original timestamps. All members of the chat on Telegram will see the messages.” from https://telegram.org/blog/move-history
I have some ideas.
-ask me befor begining of importing if i want to import them in there correct timstamp or now
-You can add options to control imported msgs like delete all imported msgs and hide them or to copy/ move them to another chat, and option to move imported msgs to there correct time (this will be usfeul if i change my mind when i chose to import them today or to fix the issue that the above comments talk about)
- devs can mange to prevent msgs on feutre or before 16 years ago
- the import msgs shoud not send notifications to other becuse it woud be so annoying (send silnt msg by defult)
I n the end sorry for bad English.. And hope the post onwer add this to it
This may be the only available solution because there is group chats with alot of names