Azure DevOps "The user doesn't have access to the variable groups added to this pipeline or they are not found. IDs: 3"

Issue:

"The user doesn't have access to the variable groups added to this pipeline or they are not found. IDs: 3"

When this happens:

• Migrating a Pipeline in "Json" format from "Azure DevOps On-premise 2020" towards "Azure DevOps Cloud".
• When saving all changes is complaining that no access for the user towards "Variables Groups" that seems to be counter-intuitive because those were created with my user while doing the Import, i.e did create the same "Variables and Values" for the consumption of the Pipeline

Solutions Offered and Applied:

Some documentation indicated to do the next: "So you just need to add "Project Collection Build Service(xxx)" account as Administrator role for the variable group."

I followed this and added the "Project Collection Build Service" from "read" to "Administrator" but the same error output is presented.

State: Solved

Solution Details:

It seems MS/Azure DevOps hashed each link to a variable group dependant on the Collection, so when migration takes place the current links migrated are completely useless, The right action would be in that sense to undo the links are re-create them from scratch again.

This will save a lot of time for other folks with the same issue, enjoy!