shipmentLines REST no longer documented in 26B

Summary:

In 25C the Shipment Lines is still documented. But when going to latest version 26B that REST API is no longer documented. Although it still works, I wonder why that is. Was that communicated in the TOI of some release after 25C?

What is the best alternative for using Shipment Lines REST that is also equally simple to use?

versus the latest documentation where it is not in anymore

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