Data Import does not support recursive tree doctypes like Item Group

Hi every one,

When i try to import tree parent child data to doctype with tree structure :
Steps to reproduce the issue:
Create a tree in (Custom DocType as Is Tree options)
Export it (using the Data Import tool)
Delete the tree
Import the same file

Observed result :
Errors about the Parent Item Group not existing when it’s already in the file

Stacktrace / full error message :
Import File Errors and Warnings
Column 4 (Old Parent)
The following values do not exist for ECI_Sample_4: 2e5b765437
Column 5 (Parent ECI_Sample_4)
The following values do not exist for ECI_Sample_4: 2e5b765437

Screen Shot => Tree

Screen Shot => Import

Please Help