I just insatlled the goty but ı cant continue with my save files from original one.İt says it was created in newer version.What do I do ?

Maybe you have set the update-option to manual. Check that. If the gameversion is lower than the one of the savegame, you yust need to update to the same or a higher version.

1.3X saves are not compatible to the 1.2X game. Why ever.

(The exact version of your savegame is shown in the thumbnail belonging to the savegame.)