Can I import savegames from Tropico 4 to Tropico 4 Gold?

So far I played Tropico 4 without Modern Times, but now I purchased the Gold Edition containing basegame and expansion pack.

Is there any way I can copy my progress from the base game to the gold edition?

I already looked into C:\\Users\Name\Application Data\Tropico 4[ Gold]\. If I only copy the users folder in this directory I can choose my name from the base game, but progress is completely lost (achievements as well as campaign status and save games). If I instead copy the complete folder the save games and everything is there, but there is nothing left from the expansion pack (except that the version is 1.5 instead of 1.0).

Solution 1:

After some experimenting I found the answer.

1. Backup the content of Tropico 4 Gold folder.
2. Move the whole folder from Tropico 4 to Tropico 4 Gold
3. Copy the DLC folder from within the backup folder into the Tropico 4 Gold folder

The saved game and the expansion are then available at the same time.