Marking up progressives?

Skilled opticians evaluate a patient’s current pair of eyeglasses during the selection and fitting of new eyewear. The optician will observe how their current frame fits on their face (tilt, face form, dimensions), the eye size, bridge design and fit and temple length are noted. The current lens style and material is evaluated and also noted. Lined bifocals are typically measured and placed at the lower lid. If a patient wears a lined bifocal, the optician will ask if the patient is satisfied with where the line falls. Patients will remark that the line is either too high (it gets in the way) or too low (they have to pick up their chin too much to read). The optician will measure the new pair in accordance to the feedback received from the patient. 
    Progressive lenses are fitted center pupil. A skilled optician will duly note the patients current frame characteristics as mentioned earlier as well as lens material and design. The optician will also have a conversation as to how the progressives are working for their needs. We call this lifestyle dispensing. My question for you is this: 
Do you dot a patient’s current progressive lenses to see where they were fit to? Or do you trust they are fit at center pupil?
Please answer this informal poll. Thank you, your response is greatly appreciated.