I have a DB created with older version 1.4.96 and we've upgraded to 1.4.99. 
When altering a table to drop a column, it cause table to be renamed, to 
something like <table>_COPY_##_## where ## is a number. Once this happens, 
it get DB to a corrupted state and it is no longer usable. Is this a known 
issue? Is there a workaround?


org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "DEPLOYMENT_SPEC" not found; 
SQL statement:
ALTER TABLE deployment_spec DROP COLUMN vlan_pool_fk [42102-199]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:451) 
~[factory.jar:sxrel2.0]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:427) 
~[factory.jar:sxrel2.0]
at org.h2.message.DbException.get(DbException.java:205) 
~[factory.jar:sxrel2.0]
at org.h2.message.DbException.get(DbException.java:181) 
~[factory.jar:sxrel2.0]
at org.h2.command.Parser.tableIfTableExists(Parser.java:7497) 
~[factory.jar:sxrel2.0]
at org.h2.command.Parser.parseAlterTable(Parser.java:7307) 
~[factory.jar:sxrel2.0]
at org.h2.command.Parser.parseAlter(Parser.java:6546) 
~[factory.jar:sxrel2.0]
at org.h2.command.Parser.parsePrepared(Parser.java:828) 
~[factory.jar:sxrel2.0]
at org.h2.command.Parser.parse(Parser.java:788) ~[factory.jar:sxrel2.0]
at org.h2.command.Parser.parse(Parser.java:760) ~[factory.jar:sxrel2.0]
at 
org.h2.command.CommandContainer.recompileIfRequired(CommandContainer.java:108) 
~[factory.jar:sxrel2.0]
at org.h2.command.CommandContainer.update(CommandContainer.java:128) 
~[factory.jar:sxrel2.0]
at org.h2.command.Command.executeUpdate(Command.java:267) 
~[factory.jar:sxrel2.0]
at org.h2.jdbc.JdbcStatement.executeInternal(JdbcStatement.java:233) 
~[factory.jar:sxrel2.0]
at org.h2.jdbc.JdbcStatement.execute(JdbcStatement.java:205) 
~[factory.jar:sxrel2.0]

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