The phrase "abandon existing" is correct and usable in written English.
It can be used when discussing the decision to stop using or maintaining something that is currently in place.
Example: "In order to innovate, we must abandon existing practices that no longer serve our goals."
Alternatives: "discard current" or "forsake existing".
We cannot abandon existing law for a promise.
A longer workweek, her critics argue, would force states to abandon existing job-training and placement programs in favor of unpaid workfare assignments for legions of welfare recipients.
Having banks in models would generate shocks from within the system.The world's big central banks are interested in these new ideas, although staff economists are reluctant to abandon existing "industry-standard" models.
In the call, Mr. Lewis noted that "price competition is down from a year ago" and explained that his clients — mostly midsize employers seeking to buy health coverage for their employees — were facing a tough market, in which insurance carriers are increasingly willing to abandon existing customers to improve their profit margins.
A push for more transparency in precious metals saw banks last year abandon existing benchmark prices, including the century-old "gold fix", which had been set twice a day via a telephone auction, in favour of a physically settled electronic system.
While ReplayTV says it won't abandon existing customers, it is going to "commit fewer resources to the manufacturing and direct marketing of its house-brand digital video recorders".
First, filmgoers abandoned existing theaters, and then attendance fell off altogether when the movie studios failed to produce any blockbusters.
Mr. Doniger warned that abandoning existing safeguards would not only encourage concentrations of other pollutants it could even allow some plants to increase harmful emissions.
"If we continue this practice of abandoning existing shopping centers to build new ones, we're inevitably going to run out of space".
This implied institutional reform is neither hard in the sense of calling for a novel space for trans-domain assessment nor radical in the sense of abandoning existing assessment traditions, but institutional reform nevertheless.
But that approach would have required Americans to abandon their existing employer plans for something new and unfamiliar.
