coinomi doubt

[bitcoinslave]

As coinomi didnt answer me, could you shed some light, thanks

Being Processed since 2 days 21 hours
#859240 Doubt, reported 3 days ago
Guys, Can I export my coinomi zec nmc private keys n import/sweep into the respective core wallets, if so any issue or diferente procedure I should be aware? Another question, Is there any security benefit of using coinomi totally offline, n when I want to spend from one address I could sweep it into a new coinomi wallet? Is it safe too? Any benefit trying to protect a kind offline coinomi wallet? Releasing/sweeping one private into a new coinomi online wallet would compromise my "cold storage" of all other coins? Thanks, Rick