Cutting damaged leaves away or not?

You can leave them until they are completely yellow, it won't harm your plants, they just look a bit untidy. While ever there is still some green in them, they will still be photosynthesising and making some energy for your plant to use for growth, and while not a lot, it is still a lot more than if they were not there! Besides, as they go yellow, your plant will be translocating carbs, sugars, amino acids etc from the damaged leaves to be used in other parts of the plant where growth is occurring. Again, their removal will just deprive your plant of some goodness that it has already made, and while only small in quantity, it is a lot more than if the leaves were removed, for purely cosmetic reasons. Remember too, all the plants' energy is made in the leaves, so removing them will just reduce the amount of energy your plant can make. Unfortunately, once burnt like this, the affected leaves will not recover, so leaving them until they are completely yellow before removing them is actually the best thing you can do for your plant. If, as you seem to think, your plants need "energy to recover", removing the leaves will mean there is less energy being made, therefore any type of "recovery" will take even longer due to the reduction in energy making capacity. So, no need to remove them, they are not harming your plant and if you did remove them, "recovery" will take longer, plus you are also removing a source of ready made elements that she can/could use to aid in that "recovery". Your plant "knows" what it is doing and once the leaves have passed their usefulness, they will fall off without any human intervention needed. Hope this helps, Organoman.