Will I have issues with the other capsule being left in?

Leaving a breast implant capsule in the chest will allow Breast Implant Illness symptoms to arise. The capsule itself contains the gel bleed from the implant causing silicone toxicity. As for the look, the body does not absorb the capsule. Your best bet is to fond a surgeon that will remove both capsules in its entirety.

Dear amberkate14,
in case of thin capsules, they can be left inside the breast as they won't cause difference in size or shape. Thick capsules or capsular contracture should be removed. If you are considering surgery, I would suggest you consult a board-certified plastic surgeon. Only after a thorough examination, you will get more information and recommendations.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

In the absence of a significant capsule, the risks of removal probably outweigh any potential benefits. A normal asymptomatic capsule is typically very thin and translucent and should be indetectable if left in place.