VBA If Then Else. Find matches then copy paste to overwrite data

Hello everyone!

I have two spreadsheets in a workbooks.
Sheets.LiveData contains the most update to date information based on a ProjectID (status, dates..)
Sheets.toUpdate contains the ProjectID and applicable columns.

I would like to look at LiveData.ProjectID and for each row, find the match in toUpdate.ProjectID range.
If a match is found, I want LiveData.A:E data for that matched row to be pasted over the matched row of toUpdate A:E, overwriting the existing data for that matched row.
If a match is not found, then I want to copy the unmatched row from LiveData.A:E and paste to the next available row in toUpdate.A:E.