We recently had our day of giving and we had a few people who wanted to add their donations to an influencer page without having to give again.
While I understand why there is currently no way to do this, I can think of a couple instances where it would be helpful to have that capability. In this case, someone thought they were using the correct link and weren't.
A second scenario is that someone saw the link after giving and wanted their donation to go towards that influencer.
A third scenario is that an older relative wants to send in a check instead of giving online.
We created a REALLY messy workaround and I would never suggest it to anyone else.