There was massive confusion about property rights.

Indeed there may be massive confusion about what you want in the first place.

I remember the massive confusion to flight schedules etc when the UK changed time about 2 weeks before the rest of Europe.

Apologies to all for causing massive confusion.

Seeing the massive confusion near the Memorial he had struck out on his own.

The crippling blow to their government had created massive confusion which the Russians, who had remained on full alert throughout, were quick to exploit.

The defensive shifting caused massive confusion in the mind of Warner and many of his teammates.

The enchanted bombs did little damage, but brought about massive confusion, an opening that neither Ivan nor the elves missed.

One can only hope that the changes will be transparent to the end user otherwise there will be massive confusion when the switchover does happen.

Not without massive confusion and protests, of course.