Unable to expand VHD on Win 2012 R2 HyperV due to checkpoint

Hi Team,

I have a critical file server running on Windows server 2012 R2 two node Hyper V cluster, one of the data volume is running out of space, when i tried to expand the VHD the edit option is grayed out like shown in the below screenshot.

I read some articles which says if there is a checkpoint available on the VM,i will not be able to edit the VHD, as you can see there is a checkpoint taken on 12/01/2018 

I am worried if i delete the checkpoint , will i loose data , my question are as below.

1) Will deleting the checkpoint allow me to edit and expand the VHD is the checkpoint preventing me from expanding the VHD?

2) What is correct way to delete the VHD?

3) Will there be a data loss if i delete the VHD?

Regards

TechGUy,System Administrator.