Move linked issue to another issue type automatically

unknown

Hi there
The way this Jira works is the following:
After creating an issue in projectA, you click on the self-reflecting transition button to clone the issue to projectB, thanks to a postfunction. From now on, each time the issueA transitions, the linked issueB transitions too.
At present, if you want to move the issueA and the linked issueB to another issue type. you have to do it in this way:
-More>move issueA
-More>move issueB
Now, my customer wants that after moving issueA, the linked issueB moves automatically, instead on clicking on More> move issueB
Can you know how I can get it, please?
Many thanks.
Cheers,
Almu

Nic Brough -Adaptavist-

Changing the issue type is not a trivial process.

It can be trivial, if the configuration of two issue types is identical, but as soon as they diverge, you must check for any incompatibilities and deal with them carefully. 

If you were to download the code for Jira and have a look at the lengths of the code for each possible issue operation, you would find "change issue type" way up there in the longest and most complex things to do.

The need to change an issue type is usually indicative of a broken process, or, more often, an attempt to work around a broken process.  If you could explain why you think you want to do this, we may be able to help you fix the process, define a better one, or give you a better option in Jira?