[wix-users] Failed to convert version when upgrading previous Installshield install

[Tobias S]

Not sure whether engine can handle such a scenario correctly. Personally
would prefer that handling in a successor MSI of the
"99999.123456.987654321" versioned one.

Just a thought. What about a different approach: Generate a new "major"
release of the MSI with a new UpgradeCode. Then this MSI, which is
versioned correctly, services (uninstalls) the not correctly versioned MSI.
This then doesn't consider the Bootstrapper. Think about all side effects
of that caused by a new "UpgradeCode" which is in fact another product.