Update CIF files

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scfy12

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Mar 5, 2026, 5:16:59 AM (11 days ago) Mar 5

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Hello there folks,

Been doing some experimenting with the Update CIF - did a few integrity checks and found something that surprised me - just want to know that this expected behabiour!

In the Sun 14 Dec 2025 update file, there are updates going back 23rd May 2025. New cancellations and overlays.

Is this normal behaviour?

Shaun

Peter Hicks

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Mar 5, 2026, 5:24:51 AM (11 days ago) Mar 5

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Hi Shaun

That sounds fine - an existing schedule can be amended through its validity date.