Load per time box counts it in every box it covers. The panel explains: “Items in each box, counting an item once per box it spans.”
The roadmap grid on page 3 shows the item in each box it covers.
The per-theme table on page 4 lists one row per box, so a card spanning Now and Next appears twice — once with TIME BOX: Now, once with TIME BOX: Next.
The workbook has a section per time box. A spanning item appears in the section for each box it covers, with the same key and summary.This is the right shape for the questions people ask of a spreadsheet — “what is in Q3?” should include work that runs through Q3, even if it started earlier.
Because both readings are needed and only one can be the default. If a spanning epic were counted only in its first box, “what is in Next?” would under-report work that is genuinely live in Next. The exports therefore count presence, and the key lets you de-duplicate if you want a distinct count.
Tip: when you paste roadmap numbers into a board pack, say which you mean — “12 items in flight across Q3” (presence) or “9 distinct items” (unique keys).