We’re storing control system data, basically channel ID, time stamp and value, going back to ~2006. Would be nice to have chunks by for example month. So as the disk fills up, you could then take older chunks offline, because in reality you seldom need that older data. But when you do, would like to quickly restore a chunk from backup and “link” it back into the database. Looks like that’s not directly possible based on chunks. I understand the option to “export” data into some other format, for example CSV. If that’s done for the exact time range of a chunk, can then delete the original chunk. To restore, can then “import” data back from for example CSV. Was just wondering if there’s a more direct way to unlink and later restore chunks directly without export/import that I had missed.