The phrase "and replace them with a single" is correct and usable in written English.
It can be used when discussing the action of substituting multiple items or elements with one item or element.
Example: "You should remove the old files and replace them with a single updated document."
Alternatives: "and substitute them with one" or "and swap them for a single".
Labour could ditch GCSEs within 10 years and replace them with a single baccalaureate, according to the shadow education secretary, Tristram Hunt.
The logic is to shut down "public housing, food assistance, Medicaid, and the rest, and replace them with a single check", writes Nathan Schneider in Vice.
Among other things, the company is going to jettison over 60 separate privacy notices and replace them with a single, overarching master policy.
What the company had to do to recapture market share was clear: dismantle its three independent business units, each with its own expensive staff functions, and replace them with a single multi-product organization.
The second option would repeal the laws regulating both kinds of entities and replace them with a single set of rules, regardless of whether the company is organized as a corporation or partnership.
Kmart said on Tuesday that it intended to allow smaller existing contracts with the Fleming Companies and Supervalu to lapse when they expire June 30 and replace them with a single distribution deal to stock 2,100 Big Kmart and Super Kmart stores.
Labour said scrapping GCSEs and replacing them with a single, more difficult exam would fail students in the 21st century.
The things that you do with a boyfriend being over, you have to replace them with single rituals.
Even if one could pin down the number of machines that need to be replaced, said Norden, there is no single option for what to replace them with.
So after his fourth and fifth hitters led off the eighth inning with singles, Valentine replaced them with pinch-runners.
Both recently extended bans on single-use bags, replacing them with reusable bags costing 15 cents£0.08 $0.11.11) each.
