What is the effect of new criminal allegations against a probationer at a revocation hearing?

Any sanction imposed at a probation revocation hearing follows from the probationer's original conviction, and not from any new criminal allegations. (Lucido v. Superior Court (1990) 51 Cal.3d 335, 348.) Further, the total number of days a defendant spends in jail before sentencing or as a condition of probation "shall be credited" against the defendant's "term of imprisonment." ( 2900.5, subd. (a).) "If the total number of days in custody exceeds the number of days of the term of imprisonment to be imposed, the entire term of imprisonment shall be deemed to have been served." (Ibid.) "Term of imprisonment" includes "any period of imprisonment imposed as a condition of probation or otherwise ordered by a court in imposing or suspending the imposition of any sentence" (Id., subd. (c).)