Upgrading Confluence v5.0.3 to v7.2 fails on MS SQL Server

2020-03-01 17:51:51,900 INFO [Catalina-utility-1] [atlassian.confluence.upgrade.UpgradeTask] executeStatement About to execute: DROP INDEX "AO_54C900_SPACE_BLUEPRINT_AO"."index_ao_54c900_spa357134289";
2020-03-01 17:51:51,900 INFO [Catalina-utility-1] [atlassian.confluence.upgrade.UpgradeTask] executeStatement About to execute: DROP INDEX "AO_6384AB_DISCOVERED"."index_ao_6384ab_dis59056004";
2020-03-01 17:51:51,900 INFO [Catalina-utility-1] [atlassian.confluence.upgrade.UpgradeTask] executeStatement About to execute: DROP INDEX "AO_6384AB_FEATURE_METADATA_AO"."index_ao_6384ab_fea1458039816";
2020-03-01 17:51:51,900 INFO [Catalina-utility-1] [atlassian.confluence.upgrade.UpgradeTask] executeStatement About to execute: DROP INDEX "AO_6384AB_FEATURE_METADATA_AO"."index_ao_6384ab_fea1458039816";
2020-03-01 17:51:51,900 WARN [Catalina-utility-1] [confluence.impl.hibernate.ConfluenceHibernateTransactionManager] doRollback Performing rollback. Transactions:
  ->[com.atlassian.confluence.upgrade.upgradetask.MsSqlServerAoUpgradeTask.doUpgrade]: PROPAGATION_REQUIRES_NEW,ISOLATION_DEFAULT (Session #1123403011)
2020-03-01 17:51:51,916 ERROR [Catalina-utility-1] [atlassian.confluence.plugin.PluginFrameworkContextListener] launchUpgrades Upgrade failed, application will not start: Upgrade task com.atlassian.confluence.upgrade.upgradetask.MsSqlServerAoUpgradeTask@53515d2b failed during the SCHEMA_UPGRADE phase due to: StatementCallback; uncategorized SQLException for SQL [DROP INDEX "AO_6384AB_FEATURE_METADATA_AO"."index_ao_6384ab_fea1458039816";]; SQL state [S0007]; error code [3701]; Cannot drop the index 'AO_6384AB_FEATURE_METADATA_AO.index_ao_6384ab_fea1458039816', because it does not exist or you do not have permission.; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: Cannot drop the index 'AO_6384AB_FEATURE_METADATA_AO.index_ao_6384ab_fea1458039816', because it does not exist or you do not have permission.
com.atlassian.confluence.upgrade.UpgradeException: Upgrade task com.atlassian.confluence.upgrade.upgradetask.MsSqlServerAoUpgradeTask@53515d2b failed during the SCHEMA_UPGRADE phase due to: StatementCallback; uncategorized SQLException for SQL [DROP INDEX "AO_6384AB_FEATURE_METADATA_AO"."index_ao_6384ab_fea1458039816";]; SQL state [S0007]; error code [3701]; Cannot drop the index 'AO_6384AB_FEATURE_METADATA_AO.index_ao_6384ab_fea1458039816', because it does not exist or you do not have permission.; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: Cannot drop the index 'AO_6384AB_FEATURE_METADATA_AO.index_ao_6384ab_fea1458039816', because it does not exist or you do not have permission.
	at com.atlassian.confluence.upgrade.AbstractUpgradeManager.executeUpgradeStep(AbstractUpgradeManager.java:237)
...
2020-03-01 17:51:51,916 ERROR [Catalina-utility-1] [atlassian.confluence.plugin.PluginFrameworkContextListener] launchUpgrades 1 errors were encountered during upgrade:
2020-03-01 17:51:51,916 ERROR [Catalina-utility-1] [atlassian.confluence.plugin.PluginFrameworkContextListener] launchUpgrades 1: StatementCallback; uncategorized SQLException for SQL [DROP INDEX "AO_6384AB_FEATURE_METADATA_AO"."index_ao_6384ab_fea1458039816";]; SQL state [S0007]; error code [3701]; Cannot drop the index 'AO_6384AB_FEATURE_METADATA_AO.index_ao_6384ab_fea1458039816', because it does not exist or you do not have permission.; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: Cannot drop the index 'AO_6384AB_FEATURE_METADATA_AO.index_ao_6384ab_fea1458039816', because it does not exist or you do not have permission.