PPE to investment property

Speculate owns two properties and uses fair value accounting where possible.
Property A: An office building used by Speculate for administrative purposes. At 1 April 20X2 it
had a carrying amount of $2 million and a remaining life of 20 years. On 1 October 20X2, the
property was let to a third party and reclassified as an investment property. The property had a
fair value of $2.3 million at 1 October 20X2, and $2.34 million at 31 March 20X3.

What would the carrying amount of Property A be at 31 March 20X3 if Speculate used the
cost model for investment properties?

the answer as per kaplan is $1,900,000

as i know when property transferred to investment should finish the procedure of PPE up to date of transfer then revalued the asset regardless the model adopted after that hold under investment property as cost or fair value ?
that mean the asset will be 2.3 m at the date of transferred regardless the method adopted ? isn’t ?
why here ignored the fair value and depreciated over all 12 months ? kindly help