Hello there, @ebonakdarian ...
Thanks for the reply and for also providing the updates as you tested things out on your own. I'd highly recommend exploring modules more for your course content. The "Modules" index page is simply a way to organize your content. For example, you can name your modules like "Module 1", "Module 2", etc. Or, at our College, we suggest naming our modules "Week 1", "Week 2", etc. Then, you add any content from your "Pages", "Assignments", "Discussions", and "Quizzes" index pages to the "Modules" page. You can create as many modules as you need, and then you can put as many items from your "Pages", "Assignments", "Discussions", and "Quizzes" into each module...and organize it based on the order in which you'd like your students to complete work.
Modules are nice because then you can hide your "Pages", "Assignments", "Discussions", and "Quizzes" index pages (so there is a crossed-out eye icon next to them) from students. If the items from these pages are added to your "Modules" page, students can still get to those items even if you've hidden the index pages. You can direct your students to always use the "Modules" page instead of having to find things using "Pages", "Discussions", and "Quizzes".
The other thing to notice is the difference between "Remove" and "Delete". If you look at your "Modules" index page and click the three-dot kebab icon to remove an item within a module, you'll see an option to "Remove" it from the module. For example, you might want to remove an assignment from an module. When you do this, it will not completely delete it from your course. If you go to your "Assignments" index page, you'll still see that assignment listed there. You've only removed it from the "Modules" index page. By contrast, if the assignment was still within a module and you went to your "Assignments" index page, if you clicked on the three-dot kebab icon next to the assignment name, you would see the option to "Delete". If you deleted the assignment from this page, it would also delete it from the "Modules" page. The same holds true if you delete something from the "Pages", "Discussions", and "Quizzes" index pages...as long as the item has been added to the "Modules" page.
Yup...the steps I've outlined should be a safe approach for your imported content, too. You're not deleting anything if you use your "Modules" index page...you're just removing it from that page. And, if you accidentally do delete something from your course, you can try using the somewhat known/unknown "undelete" trick: Undeleting things in Canvas.
I hope this helps to clarify things for you. Keep us posted here in the Community...thanks!