When IXC adds a dependency to the twin project, it ignores an existing valid reference if the dependency is defined with a condition such as:

<ItemGroup Condition="'$(UseLocalAXOpenSources)' == 'true' and Exists('$(AXOpenRoot)')"> ... list of dependencies ... </ItemGroup> 

When IXC adds a dependency to the twin project and central package management is used (Directory.Packages.props), it adds the dependency with a specified version, for example:

<ItemGroup> <PackageReference Include="AXSharp.Abstractions" Version="0.47.0-alpha.405" /> <PackageReference Include="AXSharp.Connector" Version="0.47.0-alpha.405" /> ... </ItemGroup>