Draft Order Api Note and Cart Attributes issue

Shopify Partner
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I have created a private app on one store. It uses draft order admin api and app code is in PHP.

Thing is when draft order is created i can see cart note and cart attributes in draft order. But if I transfer that draft order to real order I am not able to see those or if someone makes payment then also I am not able to see those. I have already debugged.

Can anyone here help me with this issue?