Cloud to Cloud Migration erased story points

[Karen Bottai]

Hello Fellow Atlassian's

I prepped and performed a Cloud to Cloud migration between two of our sites. I first went to our sand box and I had one issue with one project - that project was not migrated into production. After verifying everything was there - I migrated one project to our production environment. 

During this, I did not notice that the Story points field had been turned into "Story Points (migrated)[Date]" and erased the story points for about 55 projects. 

• Both projects were classic projects
• Both had the exact same story points fields
• both had the same custom fields
• both had the same workflows (i added it manually)

Everything was aligned and perfect, but this erased a LOT of story points. And we are in the middle of PI planning. 

Hoping someone  can shed some light. I also have this into Atlassian Support.