Why i got 2 crawl properties for a single line of text field

I have a site column of type single line of text with internal name = DESTINATION. now when i wanted to define a RefinableString managed property for this field, i found that i got 2 crawl properties for the same column named (ows_DESTINATION & ows_q_TEST_DESTINATION) as follow:-

so which one i need to use inside the mapping? and why i got 2 crawl properties instead of one?

Thanks