There was a major difference between the Berlin Stiftung JU52 and the Connie project . the JU 52 ops was run by volunteers ( LH employees and crews on their free time ) ,operated for sightseeing , VFR only .
The aircraft was also not an original Ju42 as those flown in Switzerland or South Africa. It had a new modern cockpit and P& W engines .
While the Swiss JU52 accident precipitated the fate of the Ju52 ,it was not the only reason they stopped it as was explained to the staff at the time , although the full reasons were never mentioned.
The Connie project on the other hand was aimed at running commercial ops IFR across the Atlantic and therefore modifying the aircraft to modern safety standards.
The modernization was part of the plan. The complications , delays and costs that arose in doing it were not ,
In any case if they had continued, this Corona crisis would have most probably ended the project as well.