I sort of agree with others in this thread (including @ragingloli, but maybe not to that degree) that it is certainly your place to voice concerns about how changing policies will affect the people you deal with. But how you do that is vital.
As @Bellatrix says, don’t just criticize and “bring problems”, but attempt to understand why the new changes are being made (“cost savings” is always an obvious and reasonable concern, as well as “reduce processing time” and other direct and indirect ways to improve profitability, marketability, sales, etc. – even employee turnover) and recommend a resolution to the problem that you predict. Many times managers don’t think far outside of the particular issue they’re looking at, which can lead to effects opposite to what is intended.
So if you think you know something that’s being overlooked, then by all means ask, “Have you considered the effect of this change on [whatever]? Can we include [something else] in your proposal, so that those effects will be mitigated?”