Two issues when we migrate from prometheus to victoriametrics datasource

[chenlujjj]

Hi team, we're migrating the datasource from prometheus to victoriametrics, but find two issues:

• The query will be lost or broken after switching datasource

before:

after:

• The default "Type" is instant when creating alert rules using prometheus datasource, but is range when using victoriametrics datasource. We'd like the default value is instant to prevent big query load.

Can you help to take a look into them? Thanks in advance