solution/workaround:
Aim: Merge (“B” + “A”) → "A"
Assumtion: “Automatically update internal links” is turned ON.
Process:
- Add content from “A” (copy or cut) into “B” (paste). (You have control over the order of merged content parts.)
- Delete “A”. (links to “A” will be dead temporarily)
- Rename “B” to “A”. (Now links to “B” are updated and original links to “A” are resurected.)