GL Distribution gets automatically defaulted

Hi,

Our client previously were not using JDE AR Module and where entering AR invoices directly in GL using application P0911. eg: they entered with combination of Doc co, Doc type and Document Number say for 2009 along with GL Distribution.
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Now in 2016, they have started using JDE AR Module and in the Next numbering by Company and Fiscal year they have setup the same combination of Doc Co, Doc type and Document Number which they were using in 2009.

Now in 2016 when they enter an Standard Invoice entry with an combination of Document number, Document type and Document Co.  which was used in 2009, what we notice is that the system is populating the GL distribution automatically from the same record which was entered in 2009.