I just want to say thank you for posting this answer and picture! I've been having this same issue out of the blue lately, and I literally searched the internet for 2 days trying to find how to fix it. I even saw similar posts on here where others said the same thing, but never gave a screenshot that actually showed what they were talking about (having both V1's highlighted). When I saw your picture I realized I didn't have the first V1 highlighted just the second one. Days of frustration solved in 5 seconds. Thank you so much!
I am so sorry for the frustration! Learning video editing is very unnerving if you do not learn all the 101 stuff before embarking on serious projects. Of course, no one tells you this before you dive in anyway.
As a former instructor for 10 years, in my opinion, video editing needs to be learned in a linear, modular fashion. If not, too many gray areas can frustrate the editor trying to learn the craft. Source Patching is a prime example of something that is taught in the first hour of day one in a 101 class I used to teach.
May I suggest a pro 101 course on LinkedIn Learning? Jeff Greenberg, Luisa Winters, Rich Harrington, Christine Steele are all trusted colleagues of mine, are Adobe certified, and we all used to teach together for Apple. Seek these names out or PM me for more names. YouTube is spotty and it can be very good, but also very bad! The "skipping around" to learn process is also damaging. Sitting down and absorbing the 101 lessons for a day or two is very refreshing and builds confidence.
If you simply cannot afford training you pay for, check out the Learn Panel or Adobe.com for convenient tutorials that use a step by step process for most things, but nothing beats a course with someone like Jeff Greenberg.
I'd also advise you to sign up for some courses at the FREE Adobe Conference, Adobe MAX. There are going to be some wonderful courses to bolster your video editing skills, some taught by some of the people I just mentioned.
Again, sorry you got hung up on source patching. Hope you can gather the skills you need to prevent future frustration with other stuff in short order. If you do have issues, though, be sure to stop by here first. 🙂