Retaining Conditional Formatting On New Rows?

I have a spreadsheet for recording property maintenance. All properties are grouped by a city zone in a specific colour, and there is conditional formatting on this. Also drop down lists for properties, contractors etc.

This all worked well, until I needed to start inserting rows. All the conditional formatting and lists didn't replicate on the newly inserted rows.

Also, we need to assign a unique reference number to each row but currently manually inputting them - very inefficient way of doing this as they will inevitably get mixed up and confused as rows are removed.

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