[Bug] own mmses are not restored into original conversation

[i-am-rumburak]

Describe the bug
in sms "conversation" there may be smses and mmses from both parties: me and other party. when smses/mmses are backed up and then restored then smses/mmses sent by other party are correctly restored under other party phone number. my mmses are restored to new sms/mms conversation under my own phone number. they are not a part of original conversation.

To Reproduce
Steps to reproduce the behavior:

1. find a sms/mms conversation where both parties send sms/mms, you and somebody else
2. backup sms/mms
3. delete original conversation
4. restore sms/mms
5. notice that new conversation is created with your number and it contains all mmses from original conversation that were sent by you there.

Expected behavior
when backing up sms/mms conversation i expect restoration to restore original form, not creatimg additional comversation

Screenshots
If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device: samsung a52s 5g
• OS: crdroid
• Version 9.11

Additional context
Add any other context about the problem here.

[i-am-rumburak]

this issue above is for version 1.0.1-alpha06.

i also checked version from f-droid foss 1.1.0-alpha06 but it does not backup telephone at all. 1.0.1-alpha06 asked for being default app for messaging in order to create backups, 1.1.0-alpha06 doesnt ask for such permission. clicking in backup at telephone has no action. messages from log cannot be copied. there are messages like [error opening dir]