Switching heroes and what carries over

From Chapter 4 of any path a Pale Raven's Perch appears in Dagsion. It leads to the Obelisk Chamber, where each hero has an obelisk. You can switch between battles as often as you like, but there is only one save file per profile.

Watch out

Carry-over of map exploration and subquests applies only when a path is complete. Hopping mid-path is allowed, but finishing one hero before starting the next is far more efficient.

What	Follows you?
Support Levels	Always, on every path
Blessing Levels with the gods	Always
Notable Deeds, Karma Shards, Boons	Always
Classes unlocked by path quests	Yes, on every path
World Map exploration	Only from a finished path into a fresh one
Completed subquests	Same rule; they auto-complete with rewards
Levels, items, Gold	Not between Part I paths; they do follow a hero into Parts II and III
Renown	No. Per path, and gone after Part I
Recruited units	Pooled in Part III across finished heroes

What that means for planning

Support and Blessing Levels are permanent, so time spent on them is never wasted.
Renown is disposable. Raise it as far as the recruits and class tiers you want on this path require, and no further.
A unit recruited on two paths appears twice in Part III. Merge Causality combines them, keeping the higher value of each stat along with extra classes, skill ranks and Combat Arts.

Replay instead of New Game+

There is no New Game+. Once any Part I path is finished, Replay from Any Chapter unlocks: the game keeps a bookmark at the start of every chapter of a finished path, and you can load any of them. Replaying Chapter 12 updates the roster that hero takes into Part II.

After the Part III credits you get a Clear Save just before the final boss, and from it any part can be replayed.

What that means for planning

Replay instead of New Game+

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