Flying Scotsman is due to have a full mechanical inspection after a low speed crash.
Only then will a decision be made as to whether it returns to York for the October half term.
The 100-year-old steam train was involved in a “shunting incident” on Friday at Aviemore Railway Station, near Inverness.
Two people were treated in hospital “as a precaution” and an investigation was launched after emergency services rushed to the scene just after 7pm.
The world-famous steam train was scheduled to take tourists on trips at the weekend, which had to be postponed.
Owned by York’s National Railway Museum, Flying Scotsman is celebrating its centenary year.
It was due back at the museum this coming half term (21 October – 5 November) as part of its centenary celebrations.
Visitors were due to get a 360º view of the locomotive as it took its place on the Great Hall turntable for the first time since 2016.
But the crash has left a question mark over its visit.
An NRM spokesperson said: “Following the shunting incident involving Flying Scotsman and the Royal Scotsman train carriages at Strathspey Railway on Friday 29 September, immediate action was taken by teams on the ground to alert the emergency services and prepare for a full investigation of the incident.
“Standard procedures are being followed to assess what happened during the incident and inspections are taking place by an independent investigator on behalf of Strathspey Railway, and the NRM’s collections and rail operations teams.
“In addition, the Rail Accident Investigation Branch (RAIB) has been notified.
“The museum’s aim is to understand what happened and to determine if there is any damage to Flying Scotsman as its owner.
“We will make further announcements about Flying Scotsman’s operating calendar and future dates, once investigations are complete.
“The National Railway Museum wishes to thank the emergency services who attended the scene on Friday for their prompt response and to the staff and crew of the Strathspey Railway and the Royal Scotsman train.”
A spokesperson for the Rail Accident Investigation Branch said: “The RAIB is aware of the accident at Aviemore that occurred last week.
“We are reviewing available evidence and deciding what further action to take.”
A Police Scotland spokesperson said: “Police inquiries have concluded following a low-speed train collision at Aviemore railway station on Friday 29 September.
“There was no criminality and the matter has been referred to the Rail Accident Investigation Branch.”