When you import a CAD file from another format, you should be allowed to set the Save Option to "Prompt for Save Location". With that option selected, when you go to save the imported ipt/iam file you should be presented with the same "Save/Save As" dialog box for saving any other ipt/iam file.
I do not like to use the "Imported Components" folder; I prefer to save the imported files in the same folder as the product I'm working on, and I like to keep the source CAD file in a different location so that I can easily delete them all periodically.