Can I convert a meeting in Outlook to a Skype meeting?

According to a comment in the thread Skype meeting can't been inserted into the outlook meeting invite which was already scheduled:

Modify your Quick Access Toolbar in a Meeting Occurrence and add the Skype Meeting Command to do this.

1. Open a meeting occurrence

2. Customize the toolbar (more commands -> Meeting Occurrence tab).

   

3. Find the 'Skype Meeting' command and add it to the toolbar.

4. Click OK.

5. Click the command from the toolbar and Skype meeting will be added to your existing meeting.

   

According to my understanding Skype meetings are just the same object as any other meeting, just they have a link to a Skype (for business) meeting.

What you need to do is just create a new Skype meeting and copy it's link to your existing meeting instance, then delete the new meeting object.