Anette
Whilst your partner may go bankrupt, the judgment mortgage will remain on his interest in the property, as it was registered as a judgment mortgage more than 3 months before his adjudication.)
As previously advised, you should approach Revenue to "buy out" their judgment mortgage. This process will not happen overnight, as the Revenue will probably await the outcome of the OA's review etc. So take your time in formulating an offer to the Revenue. Given the practical and costly difficulties with enforcing judgment mortgages, you should be able to negotiate a modest discount on their "equity".
If Revenue do not "sell" you their judgment mortgage, then the Revenue will probably allow the OA to realise their interest in the property. If the OA ends up going down that path, the obvious purchaser of OA's interest would be you.
In conclusion, once you "buy out" the equity, the Judgment Mortgage will be lifted. You should obtain expert legal advice in completing the transaction.
Jim Stafford