Discount Lines and Actual Lines are creating 2 different invoices because of Different Dates

Summary:

HI All,

We are facing an issue where 1 order line having discount is creating 2 invoices because of the difference in the dates.
Actual Line is taking Order date as GL Date (We have service mappings to default this)

and Discount Line is taking Contract Start date as GL Date because of which 2 invoice Lines are getting created.

How can we make sure that Discount lines also gets populated with Ordered date as GL date.

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