The phrase "are abandoned until" is correct and usable in written English.
It can be used to indicate that something will remain neglected or unused until a certain point in time or condition is met.
Example: "The old buildings are abandoned until the city decides to renovate the area."
Alternatives: "left unused until" or "neglected until".
The die was cast: the hides were abandoned until a later convoy of less stubborn passengers.
His work was opposed by typefounders and compositors, and the process was abandoned until the early 1800s.
No final decisions will be taken on which buildings will be abandoned until the BBC concludes its Delivering Quality First review at the end of the summer.
Following that flurry of activity, the search for the planet appears to have been abandoned until 1830, when Karl L. Hencke renewed it.
Thereafter, it was abandoned until the 20th century, except for a brief interval during the Crusades; the Arabs called the mountain Al-Sabba ("The Accursed").
Some anti-Trump Republicans believe the current strategy shouldn't be abandoned until Trump actually wins the 1,237 delegates he needs to clinch the nomination.
He was under the impression that the pact had fallen apart and the project was abandoned, until he met Vaughn in the street one day.
Many were abandoned until recently and one has become the Woodberry Kitchen, which is renowned for its farm-to-plate philosophy.
She also sorts nimbly through childhood memories of her mother's death wish and her own feeling of being abandoned, until it appears all but inevitable that she must follow in her mother's footsteps.
Also, as a temporary fix, the EPR's operational flexibility should be abandoned "until after licensing, and the implementation of new changes in the methodology or the safety criteria so as to ease the operating constraints," according to a May 2007 document.
