HI Vishvas
CHeck these links :
1. Yes it is ok to delete the one in abort status .. if it is allowing you to ..
2. Ensure all settings are in place .
3. You can download a single product category using R3AC1 Tcode
Adapter object =DNL_CUST_PROD1
Table name =T023
Field name = MATKL
LOW = ZMG1
Option = Equality (=low)
High = empty
http://scn.sap.com/thread/3247664
Regards
Vinita