Check and enable Web Server Rewrites

To enable URL rewrites

 - **Stores**>**Configuration**> **Web** 
 - Expand the **Search Engine Optimization section**
 - Set **Use Web Server Rewrites** to “Yes.”
 -  When
   complete, tap **Save Config**

Follow this link for more info https://www.magestore.com/magento-2-tutorial/magento-2-how-to-configure-url-rewrites/ .


Try to update your rule into this .

    Redirect 301 /store/bra_bust_lift.html /intimates/womens-intimates/bra-converters.html

Check if you apache needs a restart .
Do a flush cache storage. 

Check if you use nginx instead of apache .