Import POB as Loadout (Progression Book)

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What platform are you running Path of Building on?

Windows

Is your feature request related to a problem?

I would like to be able to import a POB as a loadout onto an existing POB.
This would allow the creation of a "progression book" when using the character import and would be a neat momento of your character after a league has finished.

Right now, the only way to do this is to have your existing saved character snapshot POB, and when you import your current character (either via character import, or via a link from poe.ninja). You then manually export the specific skill tree into your previous snapshot, and then manually add the items and skills. Which is very time consuming.

Describe the solution you'd like

To minimise development effort, it can be a little janky.

I would add an option in "Build Sharing > Import Build" to "Import to this build as a loadout".

It would only support the "default" tree, items, and skills, and only the equipped items. With an appropriate error message if there is more than one tree. this could potentially be enhanced later if the imported POB actually has loadouts in it.

Describe alternatives you've considered

This feature could eventually be enhanced to do all sorts of interesting things, like import a whole character + snapshots from poe.ninja; or automatically track your "Import Character" every time you load that characters POB and press a "snapshot" button.

Additional context

No response

Start at Build Sharing > Import Build, then trace how an imported POB supplies its default tree, items, and skills and how existing loadouts are represented. Done means a POB with one tree can be imported as a loadout on the current build, while imports with multiple trees show an appropriate error.