Latest Script Version is not seen when Upgraded

Bug description

 Latest script version is not seen if user upgraded to a newer AM version. 

How to reproduce the issue

1. Installed OpenAM 13 onwards / AM instance
2. Edit default OIDC Claims Script ( [Realm] > Scripts > OIDC Claims Script )

   /*
   * Copyright 2014-2017 ForgeRock AS. All Rights Reserved
   *
   * Use of this code requires a commercial software license with ForgeRock AS.
   * or with one of its affiliates. All use shall be exclusively subject
   * to such license between the licensee and ForgeRock AS.
   */
   import com.iplanet.sso.SSOException
   import com.iplanet.sso.SSOException <-- adding this to modify the default Script
   import com.sun.identity.idm.IdRepoException
   import org.forgerock.oauth2.core.exceptions.InvalidRequestException
   import org.forgerock.oauth2.core.UserInfoClaims
   import org.forgerock.openidconnect.Claim
   

1. Upgrade to a newer AM version instance
2. Create a new Script ( [Realm]> Scripts > New Script )
   Name: Test
   Script Type : OIDC Claims Script

Expected behaviour

Latest OIDC script version should be displayed

From Test Script:

/*
* Copyright 2014-2018 ForgeRock AS. All Rights Reserved
*
* Use of this code requires a commercial software license with ForgeRock AS.
* or with one of its affiliates. All use shall be exclusively subject
* to such license between the licensee and ForgeRock AS.
*/
import com.iplanet.sso.SSOException
import com.sun.identity.idm.IdRepoException
import org.forgerock.oauth2.core.exceptions.InvalidRequestException
import org.forgerock.oauth2.core.UserInfoClaims
import org.forgerock.openidconnect.Claim
..........
return new UserInfoClaims((Map)computedClaims, (Map)compositeScopes)
 

Current behaviour

Modified default OIDC Script is been displayed. 

From Test Script :

/*
* Copyright 2014-2017 ForgeRock AS. All Rights Reserved
*
* Use of this code requires a commercial software license with ForgeRock AS.
* or with one of its affiliates. All use shall be exclusively subject
* to such license between the licensee and ForgeRock AS.
*/
import com.iplanet.sso.SSOException
import com.iplanet.sso.SSOException
import com.sun.identity.idm.IdRepoException
import org.forgerock.oauth2.core.exceptions.InvalidRequestException
import org.forgerock.oauth2.core.UserInfoClaims
import org.forgerock.openidconnect.Claim