What will happen when we modify manifest of an existing Office add-in?

Question

I have an Office add-in available in the store. Currently, part of its manifest file is

<Requirements>
  <Sets>
    <Set Name="ExcelApi" MinVersion="1.2"/>
  </Sets>
</Requirements>

I want to change it to the follows, and expect this will make the add-in available in Office Professional Plus 2016.

<Requirements>
  <Sets>
    <Set Name="ExcelApi" MinVersion="1.1"/>
  </Sets>
</Requirements>

So after submitting the new manifest, will the add-in be re-validated again? During this period, will the existing add-in be still usable?

Answer 1

Any change to the manifest requires re-validation before publishing.

When you submit your updated add-in for validation, the existing version remains available.