This obviously would be a very complicated and expensive process.
It is a complicated process, as this data has been protected in many different ways.
This is a complicated process, with at least two levels.
The launch of any new product, in whatever industry, can be a long and complicated process.
Migration from the city was a complicated process which started in 90s.
"It's a complicated process, not something that we can do in a day."
"We have a very complicated process that doesn't really work and needs to be straightened out."
Passing legislation into law is often a complicated and long process.
It allows for a complicated process that could take a decade.
It has made an already difficult process even more complicated.