I have custom attribute named style (http://prntscr.com/mq8run).
It was perfecttly working till now. Import-export also working fine. But yesterday when I export CSV of product. All the products without style attribute, got style=11 in CSV. I create another CSV and remove style from all products and again Import CSV. It works fine style=11 removed from frontend also. But again i export CSV and found style=136 in all products (https://prnt.sc/mq7hwh)
I can't understand why this is happened.
Please help me how to solve this.