new gen 3 5kw hybrid fitted in place of my old AC3 inverter

my old 4kw system is still working fine and I ask the question how can i make the new inverter monitor both pv strings ie 4kw + 4 kw on the new inverter system by using the old inverter ct clamp ??
any help advice would be handy as my commising guy has never done this
hope that makes sense

JohnDawson Would probably need a bit more background on what sort of system you have. You've replaced an AC-coupled - was that a solar inverter, or a battery inverter ?

I don't think you can use a CT clamp to measure the DC power coming on PV string, can you ? They're usually for AC.