I’ll just magenta out the condescension and decline to participate myself.
But I am not a pharmacist.
I’m sorry to say that this is irrelevant to the question as asked, or to the legal aspect brought up. $0.02 The OP herself questioned this in a morality forum, probably by an itch of the conscience. In other words, she knows full well she is refilling a prescription that is no longer the correct patient instructions, sig, etc, but continuing to use the prescription benefit based on the old order. That isn’t a lie or intention to deceive? Why ask? I am offering professional opinion that to do so, is in fact, technically fraud. Of course I’m happy to respectfully disagree with you on this. Do what you will, but in my world working in insurance, there really isn’t anything subjective about it.
Perhaps you missed the first post. Your examples do not pertain to it. The question is whether one is obligated to get a new prescript. Of course when time comes for a renewal, any doctor will write the prescription correctly. For him to do otherwise would be dishonest.
My examples are identical situations to the first post. $0.02 Are we just “trying something” to titrate, or is this the new dose? If the physician is truly changing the dose, all files really should to be updated for obvious safety reasons: you don’t practice in a vacuum. This includes the prescription on file. And if you’re trying to fill 180 days at a time, how many renewals are you going to get @ 90 given they’ve already picked it up and it only lasts a year?

Maybe 3 more if you’re dishonest, and probably less if you’re titrating?

What are you trying to do here? You don’t even have to make the call yourself.
If this was pain medication and pain subsided to where less was needed, should the patient have to either take the full prescribed dosage or go get a re-write for a lesser dosage? Sometimes those meds are written PRN, but not always. Yet there is no deception for backing off one’s dosage.
PRN is a perfectly fine sig, but you still have to include a quantity and this is a far less analogous situation to examples I provided above. Nor is this a PRN situation. Of course there is no deception in changing a dose (to set up your strawman), but continuing to refill the wrong order when you know otherwise is deception, potentially with the intent of gain.
Begs the question. If there I no lie and no one I am trying to deceive, then I am not knowingly deceiving anyone. My conscience is clear in the matter. I know how hard it is for some people not to convert someone on every point of disagreement, but it is best to accept that people will disagree with you.
As I said in my first post in this thread - do what you need to do.

I certainly never put any effort into sniffing out and hunting this sort of thing down, especially in regards to a heart medication. $0.02 But if someone like Veronica97 came to me and TOLD me how things are changing, well of course I’m on the phone getting a new script. It is malpractice and negligence to do otherwise. It is also potentially dangerous.