TPS61089: TPS61089 clarification on via on pin 11

Tool/software:

Hello, this question has been asked here multiple times, yet, TI has provided either contradictory or incomplete answers. 

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1050585/tps61089-rnr0011a-footprint-clarification?tisearch=e2e-sitesearch&keymatch=TPS61089

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/729574/tps61089-tps61089-pcb-layout-problem?tisearch=e2e-sitesearch&keymatch=TPS61089

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/895226/tps61089-via-on-sw-pad?tisearch=e2e-sitesearch&keymatch=TPS61089

What's more confusing is that TPS61089EVM-742 doesn't place this via in their layout. 

And when I looked up at third party sites, they also show it either as having via or not having via... very confusing

https://componentsearchengine.com/part-view/TPS61089RNRR/Texas%20Instruments

https://app.ultralibrarian.com/details/16a9ff99-103f-11e9-ab3a-0a3560a4cccc/Texas-Instruments/TPS61089RNRR?uid=68059594

www.snapeda.com/.../

TPS61089 has a 0.2mm via on page 29 of the datasheet that is floating according the drawing. Solid green on pin 11 is "metal under solder" and also "solder mask opening" while dotted red is a clearance? I can assume that this is just a poorly composed drawing and dotted red was supposed to be "solder mask mask opening" and solid green is "metal under solder mask". 

With that assumption in mind, I still have questions about the via, 

1. What is the purpose of this via? 

2. Is the 0.2mm the size of drill or the pad?

3. What pad/drill is recommended?

4. Was it supposed to be through via or blind/buried?

5. Does it need to be filled or not?