Unity 2019→6 Android & Windows VR Upgrade

I have a complete, stable VR game currently sitting in Unity 2019. My only requirement is to move the entire project up to Unity 6 and leave every existing system behaving exactly as it does today. The end goal is a clean Unity 6 project that compiles without errors and produces working builds for both Android (APK/AAB) and Windows. There are no outstanding bugs to hunt down and I’m not looking for feature additions or performance tweaks—just a straightforward migration that preserves my current user interface, gameplay flow, and data handling as-is. Note: There is an optional feature involving a single video that plays at the movie theater, which may require an update due to an outmoded version. Deliverables: • Updated Unity 6 project folder, ready to open. • Signed or unsigned Android and Windows builds proving everything runs on devices. • Brief change log outlining any package replacements or API adjustments you had to make during the process. I’ll provide the full 2019 project and existing Android build for comparison as soon as we start.