sorry based on most state income tax laws, since the property was located in state Y while you are a resident of OK, none of the other capital transactions would properly be allocated to state Y. However, the gain is also taxable in OK because you are a resident there.
Thus you owe state Y whatever the tax is on the gain on the sale of that property while for OK the gain is washed out by your other capital losses.
your OK return may allow for a full or partial credit for the taxes paid to Y.
This is generally true. if you are a resident of state X with an individual income tax you are taxed on all your income even income earned on property or businesses located out of state. if that other stat also imposes an income tax on the same income your home state generally allows a full or partial credit for the doub;le-taxed income at the state/local level
