When we enable the feature to use B2B catalogs in Retail and commerce module ("Enable use of multiple catalogs on retails channels.") then, re-ordering from order history and from order template stop working.

Since most B2B customers are usually buying the same products and quantities again and again, it would make sense to let them use the same "Buy it again" and "Add template to the basket" options as B2C e-commerce customers does.

Recently Microsoft has updated the documentation confirming both options do not work properly together with B2B catalogs.

https://learn.microsoft.com/en-us/dynamics365/commerce/catalogs-b2b-sites-faq

When the B2B catalogs feature is enabled, do order templates show only items from the currently selected catalog?

Currently, order templates aren't catalog-aware. Therefore, when you access order templates, if the B2B catalog feature is enabled, only partial lines from the order template that are also part of the currently selected catalog are shown. To check for progress on the ability of catalogs and order templates to work together correctly, we recommend that you check the release notes for future updates.

When the B2B catalogs feature is enabled, is the Buy it again option available for the order lines in the order history?

Because the same customer can buy products from both B2B and B2C channels, the order history shows the customer's order history from all channels. Catalog support is available only for B2B channels, and catalog information is required to purchase in a B2B channel. Order lines from B2C channels shouldn't have any catalog information. For this initial phase, the Buy it again option was removed from the order history view. To learn whether the Buy it again option becomes available in the order history in a B2B channel, we recommend that you check the release notes for future updates.

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Many thanks,