Update solution

Good morning to everyones,

I have one unmanaged solution with:

- 1 plugin

- 5 workflow (with some flow conditions into compare Team, Users and other entity)

-10 custom view

- 2 custom button (create with ribbon workbench)

- ecc

I installed this solution in an other enviroment as managed, so I had to update the workflow with the correct entity (I substituted the TeamTest with the TeamProd, UserAtest with UserAprod ecc.).

Now I made some modifies into unmanaged solution's workflow and when I imported this solution with the modifies of workflows didn't update the managed solution because I modified the workflow to change the lookup into default solution (into prod enviroment).

This is a knew behavior for me... but the question is:

Which are the effects of an overwrite when I import a solution instead to selected "maintain"? 

Thanks!!!!