Changing many at once

Click the checkbox in front of a task, or hold Shift and click a second one to take the range. A bar appears at the foot of the screen with what you can do to the lot.

What you can change together

State	Moves them all to one workflow state
Priority
Assignee	Adds, replaces or clears
Labels	Adds or removes, rather than replacing — so a bulk add does not wipe what each already had
Cycle	Including out of one, which is how you clean up at the end of a sprint
Module
Project	Re-keys every one of them; see the task itself
Archive
Delete	To the trash, which means it is undoable

Selection survives scrolling and re-grouping, so you can select four things on a board, regroup by assignee and still have them.

Dragging instead of selecting

On a board, dragging a card between columns sets its state. If the board is grouped by something else, dragging writes that instead — group by assignee and a drag reassigns; group by a Select custom field and a drag writes the answer to that field. The column you drop into is always the value being written, whatever the grouping happens to be.

That is worth remembering the first time you regroup a board and drag out of habit.

When the change is bigger than a selection

A whole backlog arriving — import it. The preview is a real run with the writing switched off, so what it promises and what lands cannot differ.

Undoing an import — there is no undo button, but an import is ordinary tasks: filter to them, select them all and delete them together. And if you delete one too many, Settings → Data has it.

Moving a project to another instance — Project → Settings → Export as JSON writes a round trip that another Kolibri reads, including comments, which the CSV path cannot carry. It is not a backup: kolibri backup copies the database, which has to be exact.

Asking an assistant — an MCP client can do this too, and create_tasks_batch is one transaction: the whole batch lands or none of it does. “Move everything labelled legacy that is still open into the icebox cycle” is a sentence, and something that speaks MCP can carry it out against the same permissions you have.