InDesign latest version (15.02) against earlier version InDesign (13.0.1)

Hello,

A few days ago I had my OS updated from Windows 8.1 to Windows 10. 

Before the update I used to work with Adobe InDesign 2018 (version 13.0.1). With the update to Windows 10 I got a later version of InDesign 2020 (version 15.02) on my pc (Adobe CC gives me an automatic update of any new version).

Because I could now work with the latest version of InDesign I deleted the app InDesign 13.0.1 so that I could now continue working with the InDesign 15.02 version. But because many of my documents are created with the 2018 version 13.0.1 I now notice that those files cannot be synchronised any more because I had deleted the 2018 app.

Is there any possibility that I could reinstall the InDesign 2018 (version 13.0.1) on my pc so that my files can still be synchronised and at the same time keep my InDesign 2020 version 15.02?

Is there someone within the community who knows how to resolve this problem?

Many thanks in advance

Jommeke