A legal technicality may mean that the court-ordered ban on four-wheel driving in Tasmania's Arthur-Pieman Conservation Area remains in place throughout the summer.

The Government opened up tracks in the state's west coast in December last year, but the Tasmanian Aboriginal Centre (TAC) appealed to the Federal Court, alleging off-road vehicles could damage Aboriginal sites.

The TAC won an interim injunction stopping the Parks and Wildlife Service from issuing any permits to use the tracks until the matter went to a full hearing.

That hearing was set down for the last week of August.

Because of a legal technicality, the Government asked to be given until Thursday to file amended pleadings.

The court heard if those amendments meant the matter was not ready to start on the allocated date, it was unlikely to be heard before next year and the ban would remain in place in the meantime.

The tracks were closed in 2012 to protect Aboriginal heritage, including middens, hut depressions and rock engravings.

During the initial application for an injunction stopping the issuing of permits, Federal Court Judge Duncan Kerr found that most, if not all, of the 90 kilometres of tracks were listed on the National Heritage register.

The State Government's plan was to introduce a permit system and allow only 12 vehicles a day to use the tracks.

Under the injunction, the Government is allowed to carry out its planned $300,000 worth of track upgrades.