Start with the evidence
Compare the covered periods and source identifiers before combining records. Identify shared entries by more than amount alone, using the references available in the source.
Work through the example
One file covers 1–15 October and another covers 10–31 October. Entries from 10–15 October may appear in both; the overlap is a review boundary, not proof that every repeated amount is duplicated.
Make the next step clear
Document which source covers the overlap and follow the established correction process. Preserve both originals so the decision can be checked rather than deleting evidence after combining files.
Keep the source context
These guides describe how to organize a statement review. They do not request bank credentials or imply that a bank connection can initiate transfers. Keep original descriptions and account references appropriately protected while preserving enough context for authorized review.