Correction of Plan Type Erroneously Selected by Prior Service Provider in IRS Determination Letter Submission

Here's the situation: Company A sponsors Plan X, a multiemployer defined contribution plan. The plan allows in-service hardship withdrawals under a more liberal definition than the one used in IRS regulations applicable to 401(k) plans until recently. The plan's primary form of distribution is an annuity, with the ability to elect a lump sum, with spousal consent. Service Provider M filed an application for a determination letter with the IRS and checked that the plan was a money purchase plan. The IRS issued the letter with a caveat that the letter was conditioned upon adopting a plan amendment characterizing the plan as a money purchase plan. The plan has been consistently operated as a profit sharing plan. Company A proposes to file a VCP application with the IRS permitting the plan to be amended to be characterized as a profit sharing plan from its inception. In effect, the plan is correcting the error by plan amendment to conform to its operation. There are no additional qualification errors.  Is the IRS likely to approve the proposed correction?