is there a way to change Custom field ID's

[malli_tech1994]

is there a way to change Custom field ID's

[Nic Brough -Adaptavist- · Accepted solution]

Welcome to the Atlassian Community!

A migration, done properly, will not need to worry about custom field IDs.  The only type of migration that would is where you're trying to do it with SQL, directly amending the database, and there is no question that this is the worst possible way to do any migration and you should never use it.

Your migration/merge should be done by exporting and importing issues.  There are many options for doing that, but none of them use the IDs in the transferred data, they all map them to use existing data or create new ones.

[malli_tech1994]

Thank you Nic

[John Funk · Accepted solution]

Hi Malli - Welcome to the Atlassian Community!

No, you should not try to change those as they are connected in many places. What are you trying to accomplish that you would need to change the ID of a custom field? 

[malli_tech1994]

we are planning to merge two different instances ,is there any chance that we face issue related custom field ID's, status ID's or Transition ID's

[John Funk]

Hmm, good question, but I am no migration expert. Someone with that experience would be better answer it.