Auto mappers sincerely need to go away. They work kind of fine initially, but at the first custom field mapping or nested field extraction, you have to invest hours into mostly complete failures of unecessary DSLs in order to something that is extremely trivial to do in basic C#, and often it is impossible to shoe horn the necessary mapping into place. Then you have to deal with package upgrades which regularly rewrite custom mapping logic, and to be sure you have to write additional tests just to hand hold. With multi-caret editors and regex there is no need for automappers. You can write a mapping once and forget about it.