Client email dropped out when I updated records in Ventraip to connect new website.

Hi, 

It's the first time connecting a ventraip domain to a Squarespace website. When I updated/added the records yesterday to the DNS inside the clients Ventraip account, it seems to have dropped her email records out. I didn't however delete any email records, and to fix this the clients IT has added them into the records today and is convinced I deleted them. 

The website is still propagating and Squarespace has confirmed everything is right with the records. What have I done to delete the email records? I have a screenshot of the records before I touched them, then afterwards today, once I updated them, and the IT guy added in the outlook records. 

What am I missing? I don't want this to happen again? Of course my client is a conveyancer so has been stressing about really important legal emails that she may not now received from the 24hr period. 

Client domain/email is all Ventraip.

I'm on hold to speak to Ventraip to try and see what went wrong. 

Attached files - 

1. the records before I touched them

2. With the new records I added in, plus the outlook ones from the clients IT which has reconnected her email. 

I think maybe I was supposed to add the records to the cPANEL?

Have confirmed with Ventra I needed to also copy the MX record across from the cPANEL, mystery solved. 

I think I'll call the provider next time and step through the process save any risks.