How do I combine 2 different projects into 1 complete project keeping all?

I have [2] projects. One has many things already working and is quite large with assets. The other project needs levels, icons, objects, event sheets from what is in project[1] to nearly complete project[2]. I really do NOT rellish redoing all of the project[1] maps, sprites, etc; in the project[2]. I tried just copying over all the subdirectories from project[1]. Deleting .uistate files; which included deleting the projects .uistate xml file. So; when it rebuilds with the new files added, it should incorporate those into the project. DOH. Nope. I looked at the projects .uistate xml. I see that it lists files, folders with certain numbers allocated to the assets. In there was a designation per-line call of 0, 1,2,4,8,12. etc; pertaining to the locations of folders and calls to assets. like this=>: <folder expanded="1" path="animation-folder/turretshell/" I figured deleting this would work. Nope. Hope it can be done and if not? maybe food for thought. I imagine someone out there would like to save time. Thanx.

Hey. DOP2000. Thanks for the answer. But yes I know I could copy and paste. But really was hoping for a copy from one project to another possiably outside of construct like I mentioned. Your way you mentioned does work. I have done that. But that too, is so lengthy. A shame we are unable to do that. Guess something that wouls need to be programmed; say; Java script. This way any duplicate object(s) and or folder(s) would be renamed to protect destination project and it's contents. probly with the word .dup at the end. Sounds like a plan. Thanx and be well.