Of course the point of modular training is that you can utilise as many or as few training providers as you wish. If some aspect of your training is not meeting your requirements, then you can of course change it. Modular training is designed to allow for this flexibility. Airlines are unlikely to care much, for the simple reason (that I suspect you are ignoring,) they won't be considering it at the 250 hour level unless you on an integrated cadet programme.
Applying at their open recruitment, is likely to be at a much higher experience level (as already mentioned) when you are in competitive consideration with other (career progression, company changing, ex military pilots.) Your training background might then warrant a question or two, but only in so much as your overall background will.
I am sure you see the distinction?