Need best practices for importing old archives (SYN-745)

[matrixbot]

Submitted by @​matthew:matrix.org
How do we spoof TSes in old messages? How do we cancel/revert bad imports?

(Imported from https://matrix.org/jira/browse/SYN-745)

[matrixbot]

What about creating a script in Synapse to import data from a JSON file containing users, messages, rooms, etc?

Cancel/revert a bad import wouldn't be a problem in the case of a new server, if anything goes wrong the database can be recreated.

-- Michael Paul

[ara4n]

see also https://github.com/matrix-org/matrix-doc/issues/698

[richvdh]

There's a lot of work going on on this over at matrix-org/matrix-spec-proposals#2716, so I don't think we need to keep this issue open.