Okla. Stat. tit. 60, § 60-1610.3: Applicability — Effective date

A. Except as otherwise provided in this act, on the effective

date of this act:

1. This act applies to all trusts created before, on, or after

its effective date;

2. This act applies to all judicial proceedings concerning

trusts commenced on or after its effective date;

3. This act applies to judicial proceedings concerning trusts

commenced before its effective date unless the court finds that

application of a particular provision of this act would

substantially interfere with the effective conduct of the judicial

proceedings or prejudice the rights of the parties, in which case

the particular provision of this act does not apply and the

superseded law applies;

4. Any rule of construction or presumption provided in this act

applies to trust instruments executed before the effective date of

this act unless there is a clear indication of a contrary intent in

the terms of the trust; and

5. An act enacted before the effective date of this act is not

affected by this act.

B. If a right is acquired, extinguished, or barred upon the

expiration of a prescribed period that has commenced to run under

any other statute before the effective date of this act, that

statute continues to apply to the right even if it has been repealed

or superseded.

C. The applicable provisions of the Oklahoma Trust Act shall

continue to apply, unless such provision is inconsistent with an

express provision of this act and, further, except as expressly

provided in this act.