Until they arrest you and formally "charge" you. After the commission of your crime, or after your arrest for it, subsequent investigation of your activities MAY disclose more criminal acts which you have committed and, yes, they can then be charged.
You need to have an attorney to advise you.
Question is too general. Needs to be more specifically worded. What state? Felony or Misdemeanor? What offense? Is the case still under investigation? Is the grand jury involved?
If the charges are violent felony charges or felony drug charges you will more than likely be extradited to Missouri. If they are not felony charges there is almost no chance that Montana will do anything. Missouri must first file charges against you and then file a warrant for your arrest. Montana cannot file charges for something that happened in Missouri. They can only turn you over to the Missouri State Police to face charges there. I don't really know what "pick up charges on you" means, but you have to see a judge where the crime happened. You can be charged in Montana for something that happened in Missouri.
Certain misdemeanor drug related charges, any felony charges, and domestic violence charges, whether misdemeanor or felony charges. This is accordance with federal law. On the matter of felonies, if the charges were only state-level felonies, and not federal felonies, it may be possible to file for relief of disability so that you can have your firearms rights restored.
Depending on past history, any amount can generate a motion to show cause, but under Federal Law, being $5000 behind is an automatic felony.
That would be a criminal case. In Michigan they would have six years to bring the charges.
Huh? Somethings missing from this question. If you're out of jail on bond, you MUST have been charged with something, otherwise how did the court know what to bond you out for?
File a petition with the court for "expungement."
The Government can file charges instead of the police in certain cases and if there is enough evidence to file charges.
It depends on the state and exact charge. In Illinois, police or the state's attorney may file misdemeanor charges up to 18 months after the incident and most felony charges up to 3 years after. Some exemptions apply.
It depends on the state, the charges, and the statute of limitations on those charges.
Get a good attorney, and go down to the county district attorney's office.