Create two explicit lanes
Keep material for the current scope separate from material intended for the revised scope. Use folders, tags, or filters that make the applicable period visible at the point of study.
Build a source register
For each resource, record its title, publisher, publication or update date, paper, syllabus period, and the official source used to verify the mapping. Mark uncertain items as review-only rather than guessing.
Do not translate by keyword alone
Similar topic labels can hide changed emphasis, boundaries, or administrative context. Compare the relevant official syllabus documents and rebuild practice where the learning objective changed.
Check your intended sitting
The applicable scope depends on the official arrangements for your examination period. Re-check current notices before switching lanes, purchasing material, or committing your final revision schedule.