'Transaction History' assignment block blank in orders replicated from ERP to CRM

Hello Experts,

I've been observing an issue as follows:

When I create a quotation in CRM, it gets replicated to ERP. A sales order is created as follow-up to the quotation in ERP. However, when the order gets replicated to CRM, the 'transaction history' assignment block of the order in CRM does not contain the link to the quotation from which it was created. Please provide inputs on why the 'transaction history' assignment block is blank in the sales order.

Thanks & Regards,

Aditya Mishra