Sauber and Force India have confirmed reports that some teams are sticking with the originally scheduled dates for the final pre-season test in Barcelona.
It had been reported elsewhere that all the teams had agreed to move the four-day test, rescheduled due to the Bahrain cancellation, from 8-11 to 9-12 March.
But only Williams, Mercedes and Ferrari announced that they will be running on the new Wednesday-Saturday schedule.
"We will be testing from 8-11 March in Barcelona," a spokesperson for the Swiss team Sauber confirmed on Monday morning.
A spokeswoman for Force India confirmed that the Silverstone based team is also sticking with the original plan.
"Teams can alter their testing days by one day but given the quick turnaround for freight departing for Australia immediately after the test we felt these days suited us better," she said.