@Mobydick
You are so far entrenched in your position that you can't see the wood for the trees, as they say.
The outcome of all the things you do is great, I understand what and where and why you're putting the money where you do. That makes perfect sense.
If doing all this shuffling makes you money, that's great. If psychologically that feels better to you, great. I'm all for people feeling good about what they're doing. If it makes you feel like you have a buffer great. If the only reason you do it is because you feel you have a buffer, that's great. I get that you’re getting emotional about it, but money has no emotion of itself. Money doesn't care about your feelings, it's a means to an end. Money is completely inert (inflation aside), until used.
Basic economics
Output / Return
When you put £1 in to any of your schemes (be it investment or cashflow, pension, stock market etc), no matter where it comes from that £1 always has the same power, it will get the same return.
It doesn't matter whether you used money from a credit card, you borrowed from a friend, you took it from under the mattress, you got it from an inheritance, Bob down the pub lent it to you or it came from your wages.
E.g. Bob down the pub is a good friend and he really likes you, so he lets you have £60k and says just give me £60k back in three years, it's a favour.
No matter where you invest the £60k, it will still get the same return as £60k from any other source.
The source is completely and totally irrelevant to the return on the investment, the investment result is always the same - because £1 invested is always £1, no matter where it comes from
Input
So, if £1 invested is £1, and it gives the same result, no matter where it comes from. The only difference is the cost of where it comes from – that’s called the input cost.
That's why you use the credit card, because the input cost of using your credit card works out cheaper than input cost of taking it out of your investments (i.e. using existing well invested money) - that makes sense, I get it.
Gain
How it makes you feel emotionally is one thing, but what I'm showing you is the gain. And the only gain is the difference between the input cost and the output return.
It's basic economics.
In your case you are using your using your credit card (input cost) to invest, which gives a slight gain over using your other input sources (e.g. cash you already have). You deduct that input cost from the return, and that’s the gain.
There are no other gains anywhere, they don't exist.
It's really that simple.