The pickings here are really meagre because the Minor Mode, being Chromatic,
         has no tail, no ANTEs, only a nucleus composed of 3 chords,
                   the TONIC [I, (Am)] in the center,
                   with the Chromatic DOMINANT [V⁷, (E⁷)] on one side
                   and the COUNTER-DOMINANT [IV⁶, (Dm⁶)] on the other.
There will be only 2 possibilities of Minor to Major,
         A Minor to its Relative C Major, and
         A Minor to its DOMINANT E Major.

A Minor To C Major

Both the Key of A minor and the Key of C major having the same natural Key Signature,
         the link between them is simple, requiring no adjustment.

A Minor To E Major

In the DOMINANT E Major Circle, a chord has been added at the beginning,
                   permitting a repeat of the last 3 chords of the A Minor Circle.
         But this added chord, the first 3 for that matter, could very well be removed.

Minor To Minor