Connector exists in more than one landscape

Hello,

When I am trying to import roles from backend system using t-code /nGRAC_ROLE_MASS_IMPRT I am getting the following error:

Connector EED100 exists in more than one landscape.

previously we had a landscape named My_Apps ;

not sure why the error is coming like this though we have removed it from the system, I am unable to find it in the standard path

Maintain Connector and Connection types-->Assign connector groups to group types.

Can anyone suggest me pls..

Regards,

Sumnanth