No not at all.

You mainly need the database and the cipher key from enterprise web.config, then run the update sql script from 1.4.3 on the database, you can install solidcp fresh, then just replace the database info and cipher key in enterprise web.config and enterprise bin scheduler config

I found the entry in the following location:
hklmSOFTWAREWow6432NodeMicrosoftWindowsCurrentVersionUninstall

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