Roll Up Summary Name does not appear on gantt chart

[dnantia]

Hello,



I have the following Roll Up summary task:

1 - Storage Server
1.1 - PREP Phase
1.1.1 - Pre Checks
1.1.2 - Backup
1.1.3 - Shutdown
1.2 - MOVE Phase
1.2.1 - Physical Move
1.3 - POST Phase
1.3.1 - Power Up
1.3.2 - Post Checks


I would like to have the name of the main summary task "Storage Server" to appear on my Gantt chart, to the left of the rollup bar and the resource name on the right of the rollup bar, as shown for example in the .png attachment.
So far I managed to get the names of all subtaks 1.x and 1.x.x to appear on my chart but I cannot make it work for the main summary task.

Can someone help?
zip file also includes my .mpp file in case it helps.

Thank you
Nantia