API feed Issue - HLC data is changing for past candles

In my algo strategy, I am fetching 5 min OHLC I have observed that the closing value of say 9:35am candle change after 5 min when data is fetched at 9:40am.

I am attaching 1 example. There were many such cases throughout the day.

In the attached example, compare Close[-1] of 5min candle which closed at 9:55am to Close[-2] of candle which closed at 10am. Yesterday I found that even High and Low of previous candle has changed. Screenshot attached.

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