Mesh reference breaks in custom plugin

Hello Everyone,

Thanks in advance.
I am trying to create my own plugin for Vehicle blueprint so that I can use it in multiple projects without migrating it repeatedly. I have successfully created my custom vehicle plugin but, after copying it from existing project to any other project the skeletal mesh and other references for animation blueprint and pawn blueprint gets detached and I have to assign mesh in all the blueprints again. So is there any way to solve this issue.
Thanking everyone for help.